Touch display device

Abstract

A touch display device comprises an electrophoresis structure, a protective layer and at least one touch sensing layer. The protective layer is disposed on the electrophoretic structure and includes an organic material layer and an inorganic material layer. The inorganic material layer is located between the electrophoresis structure and the organic material layer. The material of the inorganic material layer contains silicon dioxide (SiO2). The thickness of the inorganic material layer ranges from 20 nm to 400 nm. The touch sensing layer is arranged on one side of the protective layer. Therefore, the protective layer at least has the following advantages: (1) the barrier property is high, and external moisture can be effectively isolated; (2) the water content is low, and the electrophoresis structure is not easily influenced by water vapor of the material; and (3) the reactivity is low, and an oxidation-reduction reaction does not easily occur during electrode conversion.

Description

Technical Field

[0001] The present disclosure relates to a display device, and more particularly to a touch display device. Background Art

[0002] With the rapid development of display technology, many novel display devices are constantly being developed. Among them, electrophoretic display devices have the advantages of low power consumption and flexibility, and have development potential. Traditional electrophoretic display devices are controlled by physical buttons located on the casing. Since physical buttons occupy the surface area of ​​the casing, it is not conducive to reducing the size of the electrophoretic display device.

[0003] Therefore, some manufacturers have developed a touch-type electrophoretic display device, so that users can control the electrophoretic display device by touching the screen of the electrophoretic display device. Generally speaking, a touch-type electrophoretic display device may include an electrophoretic structure, a protective layer, and a touch module. The protective layer covers the electrophoretic structure, and the touch module is adhered to the protective layer. For example, Taiwan Patent No. TWI554918 discloses a variety of stacked structures of touch modules and protective layers.

[0004] However, currently available electrophoretic display devices cannot effectively block moisture, so the electrophoretic structure is often affected by moisture, which may result in a problem of reduced service life.

[0005] Therefore, how to provide a touch display device that can solve the above problems is one of the problems that the industry is eager to invest research and development resources to solve. Summary of the invention

[0006] In view of this, an object of the present disclosure is to provide a touch display device that can solve the above problems.

[0007] In order to achieve the above-mentioned object, according to one embodiment of the present disclosure, a touch display device comprises an electrophoretic structure, a protective layer and at least one touch sensing layer. The protective layer is disposed on the electrophoretic structure and comprises an organic material layer and an inorganic material layer. The inorganic material layer is located between the electrophoretic structure and the organic material layer. The material of the inorganic material layer comprises silicon dioxide (SiO 2 The thickness of the inorganic material layer is in the range of 20 nm to 400 nm. The touch sensing layer is disposed on one side of the protective layer.

[0008] In one or more embodiments of the present disclosure, the material of the organic material layer includes ethylene terephthalate (PET), polyimide (PI), polymethyl methacrylate (PMMA), polycarbonate (PC), polyurethane (PU), polyvinyl chloride (PVC) or polycaprolactone (PCL).

[0009] In one or more embodiments of the present disclosure, the thickness of the organic material layer is in a range from 700 nm to 10 μm.

[0010] In one or more embodiments of the present disclosure, the touch sensing layer includes a first touch sensing layer and a second touch sensing layer. The first touch sensing layer and the second touch sensing layer are respectively located on opposite sides of the protective layer.

[0011] In one or more embodiments of the present disclosure, the first touch sensing layer contacts the surface of the organic material layer away from the inorganic material layer, and the second touch sensing layer contacts the surface of the inorganic material layer away from the organic material layer.

[0012] In one or more embodiments of the present disclosure, the first touch sensing layer includes a thin film substrate and a sensing electrode layer. The thin film substrate is located on a side of the organic material layer away from the inorganic material layer. The sensing electrode layer is disposed on the thin film substrate and between the thin film substrate and the organic material layer.

[0013] In one or more embodiments of the present disclosure, the touch display device further includes a cover plate and a light guide plate. The cover plate is disposed on a side of the protective layer away from the electrophoretic structure. The light guide plate is disposed between the cover plate and the protective layer.

[0014] In order to achieve the above-mentioned object, according to one embodiment of the present disclosure, a touch display device comprises an electrophoretic structure, a protective layer and at least one touch sensing layer. The protective layer is disposed on the electrophoretic structure and comprises an organic material layer and an inorganic material layer. The inorganic material layer is located between the electrophoretic structure and the organic material layer. The touch sensing layer is disposed on one side of the protective layer. The combination of the protective layer and the touch sensing layer has a transmittance greater than 85% and a thermal conductivity less than 0.01 g / m at about 50 degrees Celsius. 2 ·Day water vapor barrier rate.

[0015] In one or more embodiments of the present disclosure, the material of the organic material layer includes ethylene terephthalate, polyimide, polymethyl methacrylate, polycarbonate, polyurethane, polyvinyl chloride or polycaprolactone.

[0016] In one or more embodiments of the present disclosure, the material of the inorganic material layer comprises aluminum oxide (AlO x ), silicon oxide (SiO x ), silicon nitride, titanium oxide, zirconium oxide, aluminum oxynitride, silicon oxynitride or amorphous carbon.

[0017] In one or more embodiments of the present disclosure, the material of the organic material layer includes ethylene terephthalate, and the material of the inorganic material layer includes silicon dioxide.

[0018] In one or more embodiments of the present disclosure, the thickness of the organic material layer is in a range from 700 nm to 10 μm.

[0019] In one or more embodiments of the present disclosure, the touch sensing layer includes a first touch sensing layer and a second touch sensing layer. The first touch sensing layer and the second touch sensing layer are respectively located on opposite sides of the protective layer.

[0020] In one or more embodiments of the present disclosure, the first touch sensing layer contacts the surface of the organic material layer away from the inorganic material layer, and the second touch sensing layer contacts the surface of the inorganic material layer away from the organic material layer.

[0021] In one or more embodiments of the present disclosure, the first touch sensing layer includes a thin film substrate and a sensing electrode layer. The thin film substrate is located on a side of the organic material layer away from the inorganic material layer. The sensing electrode layer is disposed on the thin film substrate and between the thin film substrate and the organic material layer.

[0022] In one or more embodiments of the present disclosure, the touch display device further includes a cover plate and a light guide plate. The cover plate is disposed on a side of the protective layer away from the electrophoretic structure. The light guide plate is disposed between the cover plate and the protective layer.

[0023] In summary, in the touch display device disclosed herein, the protective layer disposed on the electrophoretic structure is a composite material layer including an organic material layer and an inorganic material layer, and the inorganic material layer is closer to the electrophoretic structure than the organic material layer. Thus, the protective layer disclosed herein can have at least the following advantages: (1) high barrier properties, which can effectively isolate external moisture; (2) low water content, which makes it difficult for moisture in the material itself to affect the electrophoretic structure; and (3) low reactivity, which makes it difficult for redox reactions to occur during electrode conversion.

[0024] The above description is only used to illustrate the problem to be solved by the present disclosure, the technical means to solve the problem, and the effects produced, etc. The specific details of the present disclosure will be described in detail in the following implementation methods and related drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the above and other objects, features, advantages and embodiments of the present disclosure more clearly understood, the accompanying drawings are described as follows:

[0026] Figure 1 A schematic diagram illustrating a touch display device according to an embodiment of the present disclosure;

[0027] Figure 2 It is a schematic diagram illustrating a touch display device according to another embodiment of the present disclosure.

[0028]

Explanation of symbols

[0029] 100,200: Touch display device

[0030] 110:Substrate

[0031] 120: Thin Film Transistor Array Module

[0032] 130: Electrophoretic structure

[0033] 140: Protective layer

[0034] 141: Organic material layer

[0035] 142: Inorganic material layer

[0036] 151,251: first touch sensing layer

[0037] 152,252: Second touch sensing layer

[0038] 160: Cover

[0039] 170: Light guide plate

[0040] 180: Color filter

[0041] 251a: Thin film substrate

[0042] 251b: Sensing electrode layer DETAILED DESCRIPTION

[0043] The following will disclose multiple embodiments of the present disclosure with the accompanying drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present disclosure. In other words, in some embodiments of the present disclosure, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and elements will be depicted in a simple schematic manner in the drawings.

[0044] Please refer to Figure 1 , which is a schematic diagram illustrating a touch display device 100 according to an embodiment of the present disclosure. Figure 1As shown, in this embodiment, the touch display device 100 includes a substrate 110, a thin film transistor array module 120, an electrophoretic structure 130, a protective layer 140, a first touch sensing layer 151, a second touch sensing layer 152 and a cover plate 160. The thin film transistor array module 120 is disposed on the substrate 110. The electrophoretic structure 130 is disposed on the thin film transistor array module 120. The thin film transistor array module 120 is configured to generate a specific electric field to drive the electrophoretic structure 130. The protective layer 140 is disposed on the electrophoretic structure 130, and is located on opposite sides of the electrophoretic structure 130 with the thin film transistor array module 120. The protective layer 140 has the function of protecting the electrophoretic structure 130. The first touch sensing layer 151 and the second touch sensing layer 152 are located on opposite sides of the protective layer 140. Specifically, the first touch sensing layer 151 is located on a side of the protective layer 140 away from the electrophoretic structure 130, and the second touch sensing layer 152 is located between the protective layer 140 and the electrophoretic structure 130. The cover plate 160 is disposed on a side of the protective layer 140 away from the electrophoretic structure 130. The cover plate 160 has the function of protecting the components stacked thereunder and can be used for touch operation by the user's fingers. The first touch sensing layer 151 and the second touch sensing layer 152 can sense the touch operation of the finger on the cover plate 160 and output a touch signal accordingly.

[0045] In some embodiments, the electrophoretic structure 130 may include a plurality of microcapsules (not shown). Each microcapsule may include a plurality of light-colored charged particles and a plurality of dark-colored charged particles. The light-colored charged particles and the dark-colored charged particles have opposite charges. For example, the light-colored charged particles may be negatively charged, while the dark-colored charged particles may be positively charged. When the electrophoretic structure 130 is in a specific electric field, the light-colored charged particles and the dark-colored charged particles may be affected by the electric field and move, thereby displaying the desired image.

[0046] In detail, Figure 1 As shown, in this embodiment, the protective layer 140 is a composite material layer including an organic material layer 141 and an inorganic material layer 142. The inorganic material layer 142 is located between the electrophoretic structure 130 and the organic material layer 141. That is, the inorganic material layer 142 is closer to the electrophoretic structure 130 than the organic material layer 141. The structural configuration in which the inorganic material layer 142 is closer to the electrophoretic structure 130 has at least the following advantages: (1) high barrier properties, which can effectively isolate external moisture; (2) low water content, which makes it difficult for the moisture of the material itself to affect the electrophoretic structure 130; and (3) low reactivity, which makes it difficult for redox reactions to occur during electrode conversion. For example, through the protective layer 140 including the organic material layer 141 and the inorganic material layer 142 in this embodiment, the combination of the protective layer 140 and the touch sensing layer can have a resistance of less than 0.01 g / m at about 50 degrees Celsius. 2 · day water vapor barrier rate (WVTR).

[0047] In some embodiments, the material of the organic material layer 141 includes ethylene terephthalate (PET), polyimide (PI), polymethyl methacrylate (PMMA), polycarbonate (PC), polyurethane (PU), polyvinyl chloride (PVC) or polycaprolactone (PCL), but the present disclosure is not limited thereto.

[0048] In some embodiments, the material of the inorganic material layer 142 includes aluminum oxide (AlO x ), silicon oxide (SiO x ), silicon nitride, titanium oxide, zirconium oxide, aluminum oxynitride, silicon oxynitride or amorphous carbon, but the present disclosure is not limited thereto.

[0049] Table 1 below shows actual test data of water vapor barrier rates of different materials or combinations.

[0050] Material or combination <![CDATA[WVRT(g / m 2 ·day)]]> PET 3.9-17 PEN 7.3 PE 1.2-5.9 PP 1.2-5.9 PES 14 PI 0.4-21 PS 7.9-40 15nm Al / PET 0.18 <![CDATA[SiO x / PET]]> 0.001

[0051] According to the test results in Table 1 above, in a preferred embodiment of the protective layer 140 disclosed in the present invention, the material of the organic material layer 141 includes PET, and the material of the inorganic material layer 142 includes silicon dioxide (SiO 2 ).

[0052] Table 2 below shows the actual test data of water vapor barrier rates of different organic material products using PET as the material.

[0053]

[0054] It can be clearly seen from Table 2 above that if the protective layer 140 only includes the organic material layer 141 but does not include the inorganic material layer 142, it cannot meet the requirement that the water vapor barrier rate is less than 0.01 g / m 2 ·day requirements, thus failing to achieve the aforementioned advantages of high barrier properties, low moisture content and low reactivity.

[0055] On the contrary, if the protection layer 140 only includes the inorganic material layer 142 but does not include the organic material layer 141 , the coating property and flexibility of the protection layer 140 may be poor.

[0056] In some embodiments, taking the inorganic material layer 142 including silicon dioxide as an example, the thickness thereof may be in the range of 10 nm to 800 nm. In some embodiments, the thickness of the organic material layer 141 may be in the range of 500 nm to 50 μm.

[0057] Table 3 below shows the test results of the water vapor barrier effect and the visibility effect of the touch sensing layer with the protective layer 140 of different thickness combinations, wherein the inorganic material layer 142 is taken as an example of a material including silicon dioxide.

[0058] Inorganic material layer thickness Organic material layer thickness Test Results 10nm 700nm Fail A 20nm 700nm Pass 20nm 500nm Fail A 30nm 500nm Pass 400nm 10μm Pass 500nm 10μm Fail B 400nm 15μm Fail B

[0059] It should be noted that Fail A in Table 3 above means that the water vapor barrier rate cannot be less than 0.01g / m 2 ·day requirement, and Fail B represents the inability to meet the visibility requirement of a transmittance greater than 85%. It can be clearly seen from Table 3 above that, taking the inorganic material layer 142 containing silicon dioxide as an example, its thickness is preferably in the range of 20nm to 400nm, so as to have a better water vapor barrier effect and roughness. In detail, when the thickness exceeds 400nm, the roughness of the inorganic material layer 142 will increase significantly, resulting in a significant decrease in the transmittance. It can be seen that by adjusting the thickness of the inorganic material layer 142, the surface roughness of the organic material layer 141 can be effectively improved, thereby improving the transmittance. In addition, it can also be clearly seen from Table 3 above that the thickness of the organic material layer 141 is preferably in the range of 700nm to 10μm.

[0060] In some embodiments, the combination of the protection layer 140 and the touch sensing layer has a transmittance of less than 3% for light with a wavelength of about 380 nm, but the present disclosure is not limited thereto.

[0061] In some embodiments, the combination of the protection layer 140 and the touch sensing layer has a haze less than 2.5%, but the present disclosure is not limited thereto.

[0062] In some embodiments, the combination of the protection layer 140 and the touch sensing layer has a clarity greater than 95%, but the present disclosure is not limited thereto.

[0063] like Figure 1 As shown, in this embodiment, the first touch sensing layer 151 contacts the surface of the organic material layer 141 away from the inorganic material layer 142. The second touch sensing layer 152 contacts the surface of the inorganic material layer 142 away from the organic material layer 141. The first touch sensing layer 151 and the second touch sensing layer 152 may include a light-transmitting conductive material (e.g., ITO) or a silver nanowire (SNW; also known as AgNW) electrode layer, but the present disclosure is not limited thereto. For example, a light-transmitting conductive material or silver nanowires may be disposed on the protective layer 140 by a printing process, and then the light-transmitting conductive material or silver nanowires may be patterned by a yellow light process or a laser to form electrodes, thereby forming the first touch sensing layer 151 and the second touch sensing layer 152. It can be seen that the protection layer 140 can be regarded as a film for disposing the first touch sensing layer 151 and the second touch sensing layer 152 (that is, the first touch sensing layer 151 and the second touch sensing layer 152 share a common film).

[0064] In some embodiments, the first touch sensing layer 151 includes a plurality of first axial electrodes (not shown) separated from each other. The second touch sensing layer 152 includes a plurality of second axial electrodes (not shown) separated from each other. The aforementioned "first axis" and "second axis" are, for example, two axes perpendicular to each other (e.g., X-axis and Y-axis). In other words, the first axial electrodes are conductive lines extending along the first axis and arranged at intervals. The second axial electrodes are conductive lines extending along the second axis and arranged at intervals.

[0065] In some embodiments, the first touch sensing layer 151 and the second touch sensing layer 152 may be integrated on the same side of the protective layer 140 and disposed on a surface of the protective layer 140 away from the electrophoretic structure 130 or on a surface facing the electrophoretic structure 130. For example, the second axial electrode of the second touch sensing layer 152 may cross the first touch sensing layer 151 along the second axis through an insulating bridge structure.

[0066] In some embodiments, the first touch sensing layer 151 and the second touch sensing layer 152 may be metal mesh layers. For example, a metal material may be disposed on the protective layer 140 by a printing process, and then the metal material may be patterned by a photolithography process or a laser to form electrodes, thereby forming the first touch sensing layer 151 and the second touch sensing layer 152.

[0067] like Figure 1 As shown, in this embodiment, the touch display device 100 further includes a light guide plate 170. The light guide plate 170 is disposed between the cover plate 160 and the protective layer 140. The light guide plate 170 is configured to uniformly guide the light of the front light source (not shown) to the electrophoretic structure 130 to improve the contrast, readability and comfort of the touch display device 100. In some other embodiments, the light guide plate 170 may be omitted.

[0068] like Figure 1 As shown, in this embodiment, the touch display device 100 further includes a color filter 180. The color filter 180 is disposed on the side of the electrophoretic structure 130 facing the protective layer 140. The color filter 180 is configured to convert the black and white colors presented by the dark and light charged particles into colors. The color filter 180 is composed of three layers of red, green and blue. When current passes through the electrophoretic structure 130, the color filter 180 blocks unnecessary colors and only allows the necessary colors to pass, thereby achieving the purpose of enabling the touch display device 100 to display color images and text. In some other embodiments, the color filter 180 may be omitted.

[0069] Please refer to Figure 2 , which is a schematic diagram illustrating a touch display device 200 according to another embodiment of the present disclosure. Figure 2As shown, in this embodiment, the touch display device 200 includes a substrate 110, a thin film transistor array module 120, an electrophoretic structure 130, a protective layer 140, a first touch sensing layer 251, a second touch sensing layer 252, a cover plate 160, a light guide plate 170 and a color filter 180, wherein the substrate 110, the thin film transistor array module 120, the electrophoretic structure 130, the protective layer 140, the cover plate 160, the light guide plate 170 and the color filter 180 are the same or similar to Figure 1 The embodiments shown in the figure are as follows. Therefore, the structure, function and connection relationship of these components can be referred to the relevant description above and will not be repeated here. Figure 1 In the illustrated embodiment, this embodiment provides a modified first touch sensing layer 251 and a second touch sensing layer 252 .

[0070] like Figure 2 As shown, in this embodiment, the first touch sensing layer 251 and the second touch sensing layer 252 are respectively located on opposite sides of the protective layer 140. Specifically, the first touch sensing layer 251 is located on a side of the protective layer 140 away from the electrophoretic structure 130, and is located between the light guide plate 170 and the cover plate 160. The second touch sensing layer 252 is located between the protective layer 140 and the electrophoretic structure 130. The first touch sensing layer 251 includes a film substrate 251a and a sensing electrode layer 251b. The film substrate 251a is located on a side of the organic material layer 141 away from the inorganic material layer 142. The sensing electrode layer 251b is disposed on the film substrate 251a and is located between the film substrate 251a and the organic material layer 141. The second touch sensing layer 252 contacts the surface of the inorganic material layer 142 away from the organic material layer 141. The sensing electrode layer 251b of the first touch sensing layer 251 and the second touch sensing layer 252 may include a light-transmitting conductive material (e.g., ITO) or a nano-silver wire electrode layer, but the present disclosure is not limited thereto. For example, a light-transmitting conductive material or a nano-silver wire material may be disposed on the surface of the film substrate 251a facing the protective layer 140 and the surface of the inorganic material layer 142 away from the organic material layer 141 by a printing process, and then the light-transmitting conductive material or the nano-silver wire may be patterned by a yellow light process or a laser to form electrodes, thereby forming the sensing electrode layer 251b of the first touch sensing layer 251 and the second touch sensing layer 252. It can be seen from this that the film substrate 251a can be regarded as a membrane for disposing the sensing electrode layer 251b, and the protective layer 140 can be regarded as a membrane for disposing the second touch sensing layer 252.

[0071] In some embodiments, the sensing electrode layer 251b of the first touch sensing layer 251 and the second touch sensing layer 252 can be integrated on the same side of the protective layer 140 and disposed on the surface of the film substrate 251a facing the protective layer 140 (that is, the sensing electrode layer 251b of the first touch sensing layer 251 and the second touch sensing layer 252 share the film substrate 251a).

[0072] In some embodiments, the sensing electrode layer 251b of the first touch sensing layer 251 and the second touch sensing layer 252 may be metal mesh layers. For example, a metal material may be disposed on the surface of the film substrate 251a facing the protective layer 140 and the surface of the inorganic material layer 142 away from the organic material layer 141 by a printing process, and then the metal material may be patterned by a yellow light process or a laser to form electrodes, thereby forming the sensing electrode layer 251b of the first touch sensing layer 251 and the second touch sensing layer 252.

[0073] In some other embodiments, at least one of the light guide plate 170 and the color filter 180 may be omitted.

[0074] From the above detailed description of the specific implementation of the present disclosure, it can be clearly seen that in the touch display device of the present disclosure, the protective layer disposed on the electrophoretic structure is a composite material layer including an organic material layer and an inorganic material layer, and the inorganic material layer is closer to the electrophoretic structure than the organic material layer. Thus, the protective layer of the present disclosure can have at least the following advantages: (1) high barrier properties, which can effectively isolate external moisture; (2) low water content, which makes it difficult for the moisture of the material itself to affect the electrophoretic structure; and (3) low reactivity, which makes it difficult for redox reactions to occur during electrode conversion.

[0075] Although the present disclosure has been disclosed in the above embodiments, it is not intended to limit the present disclosure. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the definition of the attached claims.

Claims

1. A touch display device, characterized in that: Include: An electrophoretic structure; a protective layer, disposed on the electrophoretic structure, and comprising an organic material layer and an inorganic material layer, wherein the inorganic material layer is located between the electrophoretic structure and the organic material layer, wherein the inorganic material layer comprises silicon dioxide (SiO2), and the thickness of the inorganic material layer is in a range of 20 nm to 400 nm; and At least one touch sensing layer is disposed on one side of the protection layer.

2. The touch display device according to claim 1, wherein: The material of the organic material layer includes ethylene terephthalate (PET), polyimide (PI), polymethyl methacrylate (PMMA), polycarbonate (PC), polyurethane (PU), polyvinyl chloride (PVC) or polycaprolactone (PCL).

3. The touch display device according to claim 1, wherein: The thickness of the organic material layer is in a range of 700 nm to 10 μm.

4. The touch display device according to claim 1, wherein: The at least one touch sensing layer includes a first touch sensing layer and a second touch sensing layer, and the first touch sensing layer and the second touch sensing layer are respectively located on two opposite sides of the protective layer.

5. The touch display device according to claim 4, wherein: The first touch sensing layer contacts a surface of the organic material layer away from the inorganic material layer, and the second touch sensing layer contacts a surface of the inorganic material layer away from the organic material layer.

6. The touch display device according to claim 4, wherein: The first touch sensing layer comprises: a thin film substrate located on a side of the organic material layer away from the inorganic material layer; and A sensing electrode layer is disposed on the film substrate and located between the film substrate and the organic material layer.

7. The touch display device according to claim 1, wherein: Further including: a cover plate, disposed on a side of the protection layer away from the electrophoretic structure; and A light guide plate is arranged between the cover plate and the protection layer.

8. A touch display device, characterized in that: Include: An electrophoretic structure; a protective layer, disposed on the electrophoretic structure, and comprising an organic material layer and an inorganic material layer, wherein the inorganic material layer is located between the electrophoretic structure and the organic material layer; as well as At least one touch sensing layer is disposed on one side of the protective layer, wherein a combination of the protective layer and the at least one touch sensing layer has a transmittance greater than 85% and a thermal conductivity less than 0.01 g / m at about 50 degrees Celsius. 2 ·Day water vapor barrier rate.

9. The touch display device according to claim 8, wherein: The material of the organic material layer includes ethylene terephthalate (PET), polyimide (PI), polymethyl methacrylate (PMMA), polycarbonate (PC), polyurethane (PU), polyvinyl chloride (PVC) or polycaprolactone (PCL).

10. The touch display device according to claim 8, wherein: The inorganic material layer includes aluminum oxide (AlO x ), silicon oxide (SiO x ), silicon nitride, titanium oxide, zirconium oxide, aluminum oxynitride, silicon oxynitride or amorphous carbon.

11. The touch display device according to claim 8, wherein: The material of the organic material layer includes ethylene terephthalate, and the material of the inorganic material layer includes silicon dioxide (SiO 2 ).

12. The touch display device according to claim 8, wherein: The thickness of the organic material layer is in a range of 700 nm to 10 μm.

13. The touch display device according to claim 8, wherein: The at least one touch sensing layer includes a first touch sensing layer and a second touch sensing layer, and the first touch sensing layer and the second touch sensing layer are respectively located at two opposite sides of the protective layer.

14. The touch display device according to claim 13, wherein: The first touch sensing layer contacts a surface of the organic material layer away from the inorganic material layer, and the second touch sensing layer contacts a surface of the inorganic material layer away from the organic material layer.

15. The touch display device according to claim 13, wherein: The first touch sensing layer comprises: a thin film substrate located on a side of the organic material layer away from the inorganic material layer; and A sensing electrode layer is disposed on the film substrate and located between the film substrate and the organic material layer.

16. The touch display device according to claim 8, wherein: Further including: a cover plate, disposed on a side of the protection layer away from the electrophoretic structure; and A light guide plate is arranged between the cover plate and the protection layer.

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