Touch film assembly and display device

Abstract

The utility model discloses a touch membrane assembly and a display device, and relates to the technical field of display screens. The touch film assembly comprises a touch film and a water and oxygen blocking layer. The touch film comprises a base material layer with a UV cut-off function and a touch sensor connected with the base material layer. The water and oxygen blocking layer is connected with the touch film and used for blocking water vapor and oxygen. The water and oxygen blocking layer and the base material layer with the UV cut-off function are arranged in the touch film assembly, so that water vapor and oxygen can be prevented from invading a display screen connected with the touch film assembly from the touch film assembly, and ultraviolet rays can also be prevented from penetrating through the touch film assembly and irradiating the display screen connected with the touch film assembly; therefore, the influence of water vapor, oxygen and UV light on the display screen is reduced, and the service life of the display device is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of touch technology, in particular to a touch film component and a display device. Background Art

[0002] Display devices such as LED (light emitting diode), LCD (liquid crystal display), OLED (organic light emitting diode) and electronic paper ink screen displays are sensitive to water vapor, oxygen and UV light. When water vapor and oxygen invade or are exposed to UV light for a long time, they are prone to aging, affecting normal use.

[0003] For example, OLED is widely used in the field of display technology due to its advantages such as light weight, high contrast, wide viewing angle, fast response time and low energy consumption; however, OLED materials are very sensitive to water vapor and oxygen in the environment, and these factors will cause the performance of OLED devices to deteriorate and shorten their lifespan; in addition, the electronic paper ink screen display contains certain electronic ink materials, which are not only very sensitive to water vapor and oxygen in the environment, but also very sensitive to UV light. When exposed to UV light, the service life of the electronic ink material will be shortened.

[0004] Therefore, it is necessary to improve the prior art to overcome the above defects in the prior art. Utility Model Content

[0005] The utility model aims to provide a touch film assembly and a display device, which can block water oxygen and UV light.

[0006] In order to achieve the above-mentioned utility model object, the utility model proposes a touch film assembly, which includes:

[0007] A touch film, comprising a substrate layer with UV cutoff function and a touch sensor connected to the substrate layer; and,

[0008] The water and oxygen barrier layer is connected to the touch film and is used to block water vapor and oxygen.

[0009] Further, the touch sensor is a metal grid sensor, the metal grid sensor comprises a plurality of first metal wires arranged in parallel and a plurality of second metal wires arranged in parallel, and the projections of the first metal wires and the second metal wires on the substrate layer are arranged crosswise;

[0010] The line width of the first metal line and the second metal line is 1.0-5.0 um.

[0011] Furthermore, the first metal wire and the second metal wire are arranged on the same surface of the substrate layer; or,

[0012] The first metal wire and the second metal wire are respectively disposed on two opposite surfaces of the base material layer.

[0013] Furthermore, the water and oxygen barrier layer is disposed on the side of the first metal wire and the second metal wire facing away from the substrate layer.

[0014] Furthermore, the touch film assembly further comprises a protective layer. When the touch film assembly is connected to the screen, the protective layer is located on a side of the touch film away from the screen.

[0015] Furthermore, the protective layer is glass or a hardened coating.

[0016] Furthermore, the line width of the first metal line and the second metal line is 2-4 μm;

[0017] The distance between two adjacent first metal wires ranges from 200 to 800 um;

[0018] The distance between two adjacent second metal wires ranges from 200 to 800 um.

[0019] Furthermore, the substrate layer is a UV cut-off PET film, and the light transmittance of the UV cut-off PET film is greater than 90% and the haze is less than 2.0%.

[0020] On the other hand, the utility model further provides a display device, which comprises a display screen and a touch film assembly as described in any one of the above items, wherein the touch film assembly is attached to the outer surface of the display screen.

[0021] Furthermore, the water and oxygen barrier layer is provided on at least one side of the touch film assembly facing away from the display screen.

[0022] Compared with the prior art, the utility model has the following beneficial effects: the touch film assembly includes a touch film and a water and oxygen barrier layer, the touch film includes a substrate layer with a UV cutoff function and a touch sensor connected to the substrate layer; the water and oxygen barrier layer is connected to the touch film. By arranging the water and oxygen barrier layer and the substrate layer with a UV cutoff function in the touch film assembly, water vapor and oxygen can be prevented from invading the display screen connected to the touch film assembly from the touch film assembly, and ultraviolet rays can be prevented from penetrating the touch film assembly and irradiating the display screen connected to the touch film assembly, thereby reducing the influence of water vapor, oxygen and UV light on the display screen and improving the service life of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of a touch film assembly in one embodiment of the utility model, in which the water and oxygen barrier layer is connected to the touch sensor.

[0024] Figure 2It is a cross-sectional view of a touch film assembly in one embodiment of the utility model, in which the water and oxygen barrier layer is connected to the substrate layer.

[0025] Figure 3 It is a cross-sectional view of a touch film assembly of an embodiment of the present invention, in which water and oxygen barrier layers and touch sensors are arranged on both sides of the substrate layer.

[0026] Figure 4 It is a cross-sectional view of a touch film assembly of an embodiment of the utility model. In the figure, water and oxygen barrier layers are arranged on both sides of the substrate layer, and a touch sensor is arranged on one side of the substrate layer.

[0027] Figure 5 yes Figure 4 The schematic diagram of the touch film assembly shown is connected to the display screen.

[0028] Figure 6 It is a top view of a touch sensor of a touch assembly in one embodiment of the present invention, in which the first metal wires and the second metal wires are staggered and arranged in a rectangular shape.

[0029] Figure 7 It is a top view of a touch sensor of a touch assembly in one embodiment of the utility model, in which the first metal wires and the second metal wires are staggered in a rhombus shape.

[0030] Figure 8 This is a cross-sectional view of a touch film assembly in one embodiment of the utility model, in which the protective layer is directly connected to the touch film.

[0031] Fig. 9 This is a cross-sectional view of a touch film assembly according to an embodiment of the present invention, in which the protective layer and the water and oxygen barrier layer are connected via an optical adhesive layer.

[0032] Fig.10 It is a cross-sectional view of a display device according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is understandable that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0034] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0035] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] like Figures 1 to 4 As shown, a touch film assembly corresponding to a preferred embodiment of the utility model includes a touch film 1 and a water and oxygen barrier layer 2.

[0037] The touch film 1 includes a substrate layer 10 with UV cutoff function and a touch sensor 11 connected to the substrate layer 10. Therefore, the substrate layer 10 has the ability to block ultraviolet rays; optionally, the substrate layer 10 can filter ultraviolet rays with a wavelength within 380nm. The touch sensor 11 can identify the touch of the touch film 1 by the outside world.

[0038] In some embodiments, Figure 3 and Figure 4 As shown, the substrate layer 10 is provided with touch sensors 11 on both sides along the thickness direction C thereof; in other embodiments, such as Figure 1 and Figure 2 As shown, a touch sensor 11 is disposed on one side of the substrate layer 10 along the thickness direction C thereof.

[0039] The water and oxygen barrier layer 2 is connected to the touch film 1 and is used to block water vapor and oxygen. Figure 2 As shown, the water and oxygen barrier layer 2 can be connected to the substrate layer 10, such as Figure 1 As shown, the water-oxygen barrier layer 2 can also be connected to the touch sensor 11, and the water-oxygen barrier layer 2 and the touch film 1 can be connected by optical adhesive. Of course, the water-oxygen barrier layer 2 and the touch film 1 do not necessarily need to be directly connected, and other functional layers can be provided between the two.

[0040] refer to Figure 5By arranging a water-oxygen barrier layer 2 and a substrate layer 10 with a UV cutoff function in the touch film assembly, it is possible to prevent water vapor and oxygen from invading the display screen 4 connected to the touch film assembly from the touch film assembly, and it is also possible to prevent ultraviolet rays from penetrating the touch film assembly and irradiating the display screen 4 connected to the touch film assembly, thereby reducing the influence of water vapor, oxygen and UV light on the display screen 4 and improving the service life of the display device.

[0041] It is understandable that the touch film assembly needs to be disposed on the display screen, so it is transparent.

[0042] Preferably, when only one water and oxygen barrier layer 2 is provided, it is located on the side of the touch film 1 away from the display screen 4 , so that water vapor and oxygen can be blocked from contacting the touch sensor 11 , thereby improving the reliability of the touch sensor 11 .

[0043] The water and oxygen barrier layer 2 is not limited to being provided with only one layer. In some embodiments, for example Figure 3 and Figure 4 As shown, the touch film 1 is provided with a water and oxygen barrier layer 2 on both sides along its thickness direction; the thickness direction of the touch film 1 is the same as the thickness direction C of the substrate layer 10. By providing two layers of water and oxygen barrier layers 2, water vapor and oxygen can be more effectively blocked to protect the touch sensor 11 and the display screen. In some embodiments, the touch sensor 11 is a metal mesh sensor. Optionally, the metal mesh sensor can be an electromagnetic induction metal mesh sensor or a capacitive induction metal mesh sensor, which generates a sensing signal according to the external magnetic field change and capacitance change, respectively. In some embodiments, the touch film 1 includes an electromagnetic induction metal mesh sensor, which is an electromagnetic film at this time. The electromagnetic induction metal mesh sensor can sense the magnetic field of the electromagnetic pen and then generate a sensing signal. According to the sensing signal, the motion trajectory of the electromagnetic pen can be obtained. In some embodiments, the touch film 1 includes a capacitive induction metal mesh sensor, which is a capacitive film at this time. The capacitive induction metal mesh sensor can generate a sensing signal according to the touch of the finger, and the manipulation made by the finger can be obtained according to the sensing signal. In some embodiments, the touch sensor 11 includes both an electromagnetic induction type metal mesh sensor and a capacitive induction type metal mesh sensor, and can realize touch control by sensing capacitance changes, and can also realize control by sensing electromagnetic changes.

[0044] like Figure 2 , Figure 6 and Figure 7 As shown, the metal grid sensor includes a plurality of first metal wires 110 arranged in parallel and a plurality of second metal wires 111 arranged in parallel, and the projections of the first metal wires 110 and the second metal wires 111 on the substrate layer 10 (for example, on the upper surface 10a or the lower surface 10b of the substrate layer 10) are cross-arranged.

[0045] Furthermore, the metal mesh sensor is in a mesh shape, such as Figure 6 and Figure 7 As shown, the shape of the staggered arrangement of the first metal wires 110 and the second metal wires 111 can be, for example, a rhombus, a square, or a random rhombus; the distance A between two adjacent first metal wires 110 is the same, and the distance B between two adjacent second metal wires 111 is also the same. Optionally, the distance A between two adjacent first metal wires 110 ranges from 200 to 800 um; the distance B between two adjacent second metal wires 111 ranges from 200 to 800 um. On the one hand, the reliability and sensitivity of the electromagnetic induction of the electromagnetic film 100 can be improved, and on the other hand, the light transmittance can be guaranteed.

[0046] It can be understood that, in some embodiments, the distance A between two adjacent first metal lines 110 is the same as the distance B between two adjacent second metal lines 111 .

[0047] The touch film 1 is transparent, and the line width of the first metal wire 110 and the second metal wire 111 is 1.0-5.0um. At this time, the first metal wire 110 and the second metal wire 111 are invisible to the naked eye, which can effectively improve the transmittance of the electromagnetic film; further, the line width of the first metal wire 110 and the second metal wire 111 is 2-4μm, and the first metal wire 201 and the second metal wire 301 are set to a line width of 2-4um. The transmittance of the touch film 1 formed after wiring on the substrate layer 10 can reach more than 88%. When it is combined with the display screen 4, it is beneficial to improve the picture quality and ensure the viewing experience. Therefore, the line width of the metal wire is limited, and the transparency of the touch film component is improved while ensuring the touch sensitivity.

[0048] Optionally, a water-oxygen barrier layer 2 is provided on the side of the first metal wire 110 and the second metal wire 111 facing away from the substrate layer 10, which can reduce the influence of external water vapor and oxygen on the first metal wire 110 and the second metal wire 111, thereby improving the life and reliability of the touch film 1. Furthermore, the water-oxygen barrier layer 2 covers the metal wires.

[0049] In some embodiments, the first metal wire 110 and the second metal wire 111 are disposed on the same surface of the substrate layer 10. In this case, the intersection of the first metal wire 110 and the second metal wire 111 needs to be insulated. In this embodiment, a water and oxygen barrier layer 2 is preferably disposed at least on the first metal wire 110 and the second metal wire 111.

[0050] In other embodiments, the first metal wire 110 and the second metal wire 111 are respectively disposed on two opposite surfaces of the substrate layer 10. In such embodiments, a water and oxygen barrier layer 2 is preferably disposed on the surfaces of the first metal wire 110 and the second metal wire 111.

[0051] It can be understood that, in some embodiments, the substrate layer 10 is provided with touch sensors 11 on both sides along the thickness direction C thereof, and the first metal wires 110 and the second metal wires 111 of each touch sensor 11 are provided on the same layer. The touch sensor 11 on one side is controlled by sensing electromagnetic changes (the touch sensor 11 is an electromagnetic induction type metal mesh sensor), and the touch sensor 11 on the other side is controlled by sensing capacitance changes (the touch sensor 11 is a capacitance induction type metal mesh sensor).

[0052] like Figure 8 and Fig. 9 As shown, the touch film assembly also includes a protective layer 3. When the touch film assembly is connected to the display screen 4, the protective layer 3 is located on the side of the touch film 1 away from the display screen 4. The protective layer 3 is used to protect the touch film assembly to prevent the part of the touch film assembly located in the protective layer 3 from being damaged by external hard objects, thereby improving the service life of the touch film assembly and the display screen 4.

[0053] Optionally, the protective layer 3 is glass or a hardened coating, and is made of a transparent material so that the touch film assembly as a whole is transparent, ensuring that the user can visually obtain the information displayed on the display screen; the material of the hardened coating can be, for example, a modified acrylic resin system coating liquid, a polyurethane system coating liquid, etc.

[0054] When the protective layer 3 is glass, the protective layer 3 and the touch film 1 are connected by optical adhesive, thereby improving the stability between the protective layer 3 and the touch film 1. When the protective layer 3 is a hard coating, for example, it can be achieved by roller coating, micro-dimple coating, SPIN coating or flow coating; the protective layer 3 and the touch film 1 can be connected by optical adhesive, or the hard coating can be directly coated on the touch film 1.

[0055] Optionally, the substrate layer 10 is a UV cutoff PET film, which can block ultraviolet rays and reduce the oxidation of the touch film assembly and the screen by ultraviolet rays, thereby increasing the service life; optionally, the UV cutoff PET film has a transmittance greater than 90% and a haze less than 2.0%. When the touch film assembly is set on the screen, the touch film assembly has good light transmittance, thereby improving the user experience.

[0056] like Fig.10 As shown, the utility model also proposes a display device, which includes a display screen 4 and the touch film assembly as described above, the touch film assembly is attached to the outer surface of the display screen 4, and the two can be connected by optical glue.

[0057] In the display device, preferably, at least one side of the touch film 1 facing away from the display screen 4 is provided with a water and oxygen barrier layer 2, so that external water and oxygen cannot invade the touch sensor 11 and the display screen 4. At the same time, the substrate layer 10 has a UV cutoff function and can block ultraviolet rays, so the display device has the ability to block oxygen, water vapor and ultraviolet rays, thereby increasing the service life of the display device.

[0058] The above are only specific implementations of the present invention, and any improvements made based on the concept of the present invention are deemed to be within the protection scope of the present invention.

Claims

1. A touch film assembly, characterized in that: include: A touch film (1) comprising a substrate layer (10) having a UV cutoff function and a touch sensor (11) connected to the substrate layer (10); as well as, The water and oxygen barrier layer (2) is connected to the touch film (1) and is used to block water vapor and oxygen.

2. The touch film assembly according to claim 1, characterized in that: The touch sensor (11) is a metal grid sensor, comprising a plurality of first metal wires (110) arranged in parallel and a plurality of second metal wires (111) arranged in parallel, wherein the projections of the first metal wires (110) and the second metal wires (111) on the substrate layer (10) are arranged crosswise; The line width of the first metal line (110) and the second metal line (111) is 1.0 to 5.0 um.

3. The touch film assembly according to claim 2, characterized in that: The first metal wire (110) and the second metal wire (111) are arranged on the same surface of the substrate layer (10); or, The first metal wire (110) and the second metal wire (111) are respectively arranged on two opposite surfaces of the substrate layer (10).

4. The touch film assembly according to claim 3, characterized in that: The water and oxygen barrier layer (2) is provided on the side of the first metal wire (110) and the second metal wire (111) facing away from the substrate layer (10).

5. The touch film assembly according to claim 4, characterized in that: The touch film assembly further comprises a protective layer (3); when the touch film assembly is connected to a screen, the protective layer (3) is located on a side of the touch film (1) facing away from the screen.

6. The touch film assembly according to claim 5, characterized in that: The protective layer (3) is glass or a hardened coating.

7. The touch film assembly according to claim 2, characterized in that: The line width of the first metal line (110) and the second metal line (111) is 2-4 μm; The distance between two adjacent first metal wires (110) ranges from 200 to 800 um; The distance between two adjacent second metal wires (111) ranges from 200 to 800 um.

8. The touch film assembly according to any one of claims 1 to 7, characterized in that: The substrate layer (10) is a UV cut-off PET film, the light transmittance of the UV cut-off PET film is greater than 90%, and the haze is less than 2.0%.

9. A display device, characterized in that: It comprises a display screen (4) and a touch film assembly according to any one of claims 1 to 8, wherein the touch film assembly is attached to the outer surface of the display screen (4).

10. The display device according to claim 9, characterized in that The water and oxygen barrier layer (2) is provided on at least one side of the touch film assembly facing away from the display screen (4).

Images