Protective film structure with composite hardened layer

Abstract

The invention discloses a protective film structure with a composite hardened layer. The protective film structure comprises a transparent substrate and at least two tiled layers, the at least two tiled layers comprise a first tiled layer which is arranged on one surface of the transparent substrate and comprises a plurality of first tiled island blocks, a gap is formed between adjacent first tiled island blocks, and a second tiled layer which is arranged on one side, back to the transparent substrate, of the first tiled layer and comprises a plurality of second tiled island blocks; and a gap is formed between every two adjacent second tiled island blocks. At least one composite hardened layer is clamped between adjacent tiled layers, and each composite hardened layer comprises a first hard film layer and a second hard film layer. The first hard mask layer and the second hard mask layer are made of different materials, and the material hardness of the first hard mask layer is larger than that of the second hard mask layer. By arranging the composite hardened layer, enough hardness can be provided for the protective film structure by means of the composite hardened layer, and an extension space is provided for the composite hardened layer when the composite hardened layer is pressed by means of the gap of the tiling layer.

Description

Technical Field

[0001] The invention relates to a protective film structure, in particular to a protective film structure with a composite hardened layer. Background Art

[0002] Flexible and foldable screens are light and can be attached to curved objects, so they have been widely used in mobile phones, e-books, e-posters, e-labels, etc. Traditional screens can use protective glass to protect the screen from external damage, but traditional protective glass has rigid characteristics and cannot be bent, so it cannot be used in flexible screen application scenarios. Protecting flexible screens has become an important issue now. Conventional technologies can be summarized into two categories. One category is to use transparent plastic materials (such as transparent PI, PET) with a hard coating on its surface to replace traditional protective glass. The hard coating on its surface is also mostly made of glass-like materials such as silicon oxide. Since the plastic material is soft, it is easy to collapse when foreign objects come into contact with it. The collapse will cause the surface hard coating to break and lose its protective effect, so the effect is poor. The second method is to use the bendable property of ultra-thin glass to protect the flexible screen. It is currently widely used in folding mobile phones. However, the production, processing, post-production and yield of ultra-thin glass are not good, which greatly increases the product cost and the ultra-thin glass is easily broken by impact. Therefore, a layer of plastic material must be attached to its surface to reduce shock as a protective layer for the ultra-thin glass. As a result of such overlapping, the surface hardness is insufficient and it is easy to leave marks under the scratches of foreign objects, which affects the display effect of the screen. Based on improving the shortcomings of the above-mentioned conventional technology, the hard coating layer coated on the surface of the flexible material of this patent has the function of resisting the extension of cracks, so that when scratched by foreign objects, it will not produce a complete shattering result, but only produce micro-fragmentation and control it within an acceptable range, so that the surface hardness can be maintained to achieve the effect of protecting the screen.

[0003] Figure 1 A schematic diagram of folding a conventional electronic product 100 ′ with a foldable display screen is shown. The electronic product 100 ′ is, for example, a smart phone with a foldable display screen, or an electronic book with electronic paper. Figure 2 A partial cross-sectional view of the structure of the electronic product 100' with a foldable display screen is shown. As shown in this figure, the electronic product 100' has at least a protective layer 10', a touch layer 20' and a bendable or foldable display screen 30' from top to bottom. The protective layer 10' needs to have a certain hardness to provide scratch resistance, and the transparency is preferably greater than 70%; the harder the material hardness of the protective layer 10' or the thicker the thickness, the more likely the protective layer 10' will break when the display screen 30' is bent or folded. See Figure 3A and 3B, respectively, to illustrate the problems that occur when the electronic product 100' with a foldable display screen is folded. As shown in these figures, since the protective layer 10' of the foldable display screen in the prior art must have a certain hardness and thickness to resist scratching, when the foldable display screen is folded, the protective layer 10' will be broken due to the insufficient flexibility of the protective layer 10'. The internal structure of the touch layer 20' under the protective layer 10' will also be affected and ruptured. In more serious cases, it will also affect the display screen and cause damage, causing the electronic product 100' with a foldable display screen to display deterioration or even operation errors. If only the hardness and thickness of the protective layer 10' of the foldable display screen in the prior art are reduced, although the flexibility can be improved, it will cause insufficient hardness to cause breakage and scratch problems when foreign objects come into contact. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned defects. By providing a flat layer with a gap and arranging a composite hardening layer between two adjacent flat layers, the composite hardening layer can be used to provide the protective film structure with sufficient hardness, and the gap between the flat layers can be used to provide expansion space for the composite hardening layer when it is pressed.

[0005] In order to achieve the above-mentioned purpose, the purpose of the present invention is to provide a protective film structure with a composite hardened layer, comprising: a transparent substrate: comprising a first surface and a second surface; at least two tiling layers, comprising: a first tiling layer, arranged on one side of the first surface of the transparent substrate, comprising a plurality of first tiling island blocks, and a gap is formed between adjacent first tiling island blocks; a second tiling layer, arranged on the side of the first tiling layer facing away from the transparent substrate, comprising a plurality of second tiling island blocks, and a gap is formed between adjacent second tiling island blocks; at least one composite hardened layer is arranged between adjacent tiling layers; each of the composite hardened layers comprises a first hard film layer and a second hard film layer, the first hard film layer and the second hard film layer are made of different materials and the material hardness of the first hard film layer is greater than the material hardness of the second hard film layer.

[0006] According to one embodiment of the present invention, a second tile island block of the second tile layer partially overlaps with a first tile island block of the first tile layer in the projection direction. A second tile island block of the second tile layer partially overlaps with at least two or three different first tile island blocks of the first tile layer in the projection direction.

[0007] According to one embodiment of the present invention, a third tiling layer is located on the side of the second tiling layer facing away from the first tiling layer, the third tiling layer has a plurality of third tiling island blocks and there is a gap between adjacent third tiling island blocks, and one of the third tiling island blocks partially overlaps with one of the second tiling island blocks of the second tiling layer in the projection direction.

[0008] According to one embodiment of the present invention, the area of ​​each of the first tile island blocks and the area of ​​each of the second tile island blocks are not less than 250 square micrometers, and are not greater than 50 square millimeters.

[0009] According to one embodiment of the present invention, the composite hardened layer includes three hard film layers.

[0010] According to one embodiment of the present invention, the protective film structure with the composite hardened layer further includes at least one hard film layer sandwiched between the transparent substrate and the first paving layer.

[0011] According to one embodiment of the present invention, an outer hard film layer is further included, the pencil hardness of the outer hard film layer is greater than 6 and is disposed on the side of the paving layer farthest from the transparent substrate facing away from the substrate. The outer hard film layer is, for example, a silicon nitride hard film with a thickness of less than 1 μm.

[0012] According to an embodiment of the present invention, each of the paving layers is made of an organic material and has a thickness of not less than 0.5 μm. The organic material is an acrylic material or a photosensitive polyimide.

[0013] According to one embodiment of the present invention, the transparent substrate is a polymer material substrate, or an ultra-thin glass substrate with a thickness not greater than 200 μm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram showing the folding of an electronic product with a foldable display screen in the prior art.

[0015] Figure 2 A partial structural cross-sectional view showing the electronic product with a foldable display screen.

[0016] Figure 3A and 3B Schematic diagrams are provided to respectively illustrate problems that may occur when the electronic product with a foldable display screen is folded.

[0017] Figure 4 A cross-sectional view of a protective film structure according to an embodiment of the present invention is shown.

[0018] Figure 5 For the corresponding Figure 4 Top view of the illustrated embodiment.

[0019] Figure 6 FIG. 4 is a cross-sectional view of a protective film structure according to another embodiment of the present invention.

[0020] Figure 7 FIG. 4 is a cross-sectional view of a protective film structure according to another embodiment of the present invention.

[0021] In the figure: 100':Electronic products 10: Protective membrane structure 10': Protective layer 20': Touch layer 12, 12': First composite hardened layer 14: Second composite hardened layer 16: The third composite hardened layer 22: First Tiling Layer 22A: First tiled island 24: Second Tiling Layer 24A: Second tile island 121, 141, 161: First hard coat layer 122, 142, 162: Second hard coat layer 30, 30': Display screen 40: Transparent substrate 41: First surface 42: Second surface 50: Lateral dura mater layer. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0023] See also Figure 4 , is a cross-sectional view of a protective film structure 10 for illustrating an embodiment of the present invention. The protective film structure 10 comprises, for example, from top to bottom, an outer hard film layer 50, a second tiling layer 24, a first composite hardened layer 12, a first tiling layer 22, a second composite hardened layer 14, and a transparent substrate 40, and is disposed on a display screen 30. The so-called "from top to bottom" mentioned above may be the usual direction of an electronic product (such as a smart phone) having such a composite hardened layer during operation, that is, the user's finger is at the top, and the display screen 30 of the smart phone is at the bottom. However, the above definition is only an exemplary direction description for illustrating the technical features of the present invention, and is not intended to limit the scope of the present invention.

[0024] like Figure 4As shown, the first tiling layer 22 includes a plurality of first tiling islands 22A. According to one embodiment of the present invention, each of the first tiling islands 22A may be, for example, an island-shaped protrusion with a trapezoidal cross-section, and the width of the upper base is smaller than the width of the lower base. Furthermore, each of the first tiling islands 22A has a gap between each other to define a first gap between two adjacent first tiling islands 22A. Similarly, the second tiling layer 24 includes a plurality of second tiling islands 24A. According to one embodiment of the present invention, each of the tiling islands 24A may be, for example, an island-shaped protrusion with a trapezoidal cross-section, and the width of the upper base is smaller than the width of the lower base. Furthermore, each of the second tiling islands 24A has a gap between each other to define a second gap between two adjacent second tiling islands 24A. The above-mentioned first tiling islands 22A and second tiling islands 24A are made of organic materials and have a thickness of not less than 0.5 micrometers (µm), and the organic material is, for example, an acrylic material or photosensitive polyimide. Furthermore, the shapes of the first tile island block 22A and the second tile island block 24A of the present invention are not limited to the above-mentioned exemplary shapes. Any shape that can form a gap between adjacent first tile island blocks 22A and adjacent second tile island blocks 24A is within the scope of the present invention.

[0025] The first composite hardened layer 12 , for example, includes a first hard coat layer 121 , a second hard coat layer 122 and a first hard coat layer 121 from top to bottom. In addition, the second composite hardened layer 14 includes a first hard coat layer 141 and a second hard coat layer 142 from top to bottom.

[0026] exist Figure 4 In the illustrated embodiment, the first hard film layer 121, 141 may be, for example, a silicon nitride material (SiNx) with a hardness greater than 6H (i.e., a pencil hardness of 6H); and the second hard film layer 122, 142 may be, for example, a silicon oxide material (SiOx) with a hardness greater than 3H (i.e., a pencil hardness of 3H) or an acrylic material with a hardness greater than 1H (i.e., a pencil hardness of 1H). Figure 4 In the first composite hardened layer 12 and the second composite hardened layer 14 shown, the hardness difference between two adjacent hard coat layer materials (i.e., the first hard coat layer 121 and the second hard coat layer 122, or the first hard coat layer 141 and the second hard coat layer 142) is preferably not less than the pencil hardness 3H, and the hardness of the first hard coat layer 121 (141) is greater than the hardness of the second hard coat layer 122 (142).

[0027] In addition, Figure 4In the embodiment shown, the transparent substrate 40 has a first surface 41 and a second surface 42, and the transparent substrate 40 is, for example, a polymer substrate, which can be a PI substrate or a PET substrate. Furthermore, the transparent substrate 40 can also be, for example, an ultra-thin glass substrate, whose thickness is not greater than 200 μm. The outer hard coat layer 50 is disposed on the side of the paving layer farthest from the transparent substrate 40 and facing away from the transparent substrate 40, that is, as shown in FIG. Figure 4 The second tiling layer 24 is shown facing away from the transparent substrate 40. According to an embodiment of the present invention, the outer hard coat layer 50 is a hard coat layer with a hardness greater than 6H, and is, for example, a silicon nitride hard coat layer with a thickness less than 1 μm. Figure 4 At least one composite hardened layer is sandwiched between adjacent paving layers, that is, at least one first composite hardened layer 12 is sandwiched between the first paving layer 22 and the second paving layer 24. Furthermore, according to one embodiment of the present invention, the thickness of the first paving layer 22 may be greater than the thickness of the first composite hardened layer 12, thereby forming a first notch with a sufficient depth, so that the first composite hardened layer 12 can sufficiently extend in the first notch.

[0028] See also Figure 5 , corresponding to Figure 4 In the top view of the embodiment shown, a second tile island 24A of the second tile layer 24 partially overlaps with at least one first tile island 22A of the first tile layer 22 in the projection direction; for example, as shown in this figure, a second tile island 24A of the second tile layer 24 partially overlaps with four different first tile islands 22A of the first tile layer 22 in the projection direction. However, the scope of the present invention is not limited to Figure 5 In the embodiment shown, according to one embodiment of the present invention, a second tiling island 24A of the second tiling layer 24 overlaps with a portion of the area of ​​at least two different first tiling islands 22A of the first tiling layer 22 in the projection direction. According to another embodiment of the present invention, a second tiling island 24A of the second tiling layer 24 overlaps with a portion of the area of ​​at least three different first tiling islands 22A of the first tiling layer 22 in the projection direction. In other words, as long as a second tiling island 24A of the second tiling layer 24 overlaps with a portion of the area of ​​at least one or two different first tiling islands 22A of the first tiling layer 22 in the projection direction, the effect of this scheme can be achieved. In addition, in Figure 5 The first tiled island block 22A and the second tiled island block 24A are rectangular in the projection direction for the convenience of explanation, and the shapes of the first tiled island block 22A and the second tiled island block 24A of the present invention are not limited thereto. The shapes in the projection direction can be triangular, circular, or various polygonal shapes.

[0029] See also Figure 4 and Figure 5, each tile island block 22A has a gap between each other to define a first gap between two adjacent tile island blocks 22A, and each tile island block 24A has a gap between each other to define a second gap between two adjacent tile island blocks 24A. Figure 4 As shown, part of the structure of the first composite hardened layer 12 extends downward due to the first notch. Furthermore, a second tiled island 24A of the second tiled layer 24 overlaps with a part of the area of ​​at least one first tiled island 22A of the first tiled layer 22 in the projection direction. In addition, the material of the first tiled island 22A and the second tiled island 24A is softer than the material of the first hard film layer 121 (141) and the second hard film layer 122 (142). Therefore, when the protective film structure 10 is squeezed and deformed by an external force, such as when squeezed from top to bottom, the first composite hardened layer 12 can extend downward through the first notch to avoid rupture. When the external force squeezes from bottom to top, the first composite hardened layer 12 is advantageously extended upward to avoid rupture because it has a downward extending portion.

[0030] See also Figure 6 , is a cross-sectional view of a protective film structure 10 according to another embodiment of the present invention. The protective film structure 10 also includes, for example, an outer hard film layer 50, a second paving layer 24, a first composite hardened layer 12', a first paving layer 22, a second composite hardened layer 14 and a transparent substrate 40 from top to bottom. Figure 6 Example and Figure 4 The difference in the embodiment is that the first composite hardened layer 12' includes five hard coat layers, namely, from top to bottom, the first hard coat layer 121, the second hard coat layer 122, the first hard coat layer 121, the second hard coat layer 122, and the first hard coat layer 121. The structural strength of the protective film structure 10 is enhanced by providing more layers of hard coat layers. Similarly, the first tile islands 22A have a gap between each other to define a first gap between two adjacent first tile islands 22A; the second tile islands 24A have a gap between each other to define a second gap between two adjacent second tile islands 24A. The first tile island 22A and the second tile island 24A are made of an organic material and have a thickness of not less than 0.5 micrometers (µm). The organic material is, for example, an acrylic material or a photosensitive polyimide. Furthermore, Figure 6 The top view of the embodiment can also be as shown Figure 5 As shown, a second tile island block 24A of the second tile layer 24 partially overlaps with at least one first tile island block 22A of the first tile layer 22 in the projection direction; for example, as shown in this figure, a second tile island block 24A of the second tile layer 24 partially overlaps with four different first tile island blocks 22A of the first tile layer 22 in the projection direction. However, the scope of the present invention is not limited to Figure 5In the embodiment shown, according to one embodiment of the present invention, a second tiling island 24A of the second tiling layer 24 overlaps with a portion of the area of ​​at least two different first tiling islands 22A of the first tiling layer 22 in the projection direction. According to another embodiment of the present invention, a second tiling island 24A of the second tiling layer 24 overlaps with a portion of the area of ​​at least three different first tiling islands 22A of the first tiling layer 22 in the projection direction. In other words, as long as a second tiling island 24A of the second tiling layer 24 overlaps with a portion of the area of ​​at least one or two different first tiling islands 22A of the first tiling layer 22 in the projection direction, the effect of this scheme can be achieved. In addition, in Figure 5 The first tiled island block 22A and the second tiled island block 24A are rectangular in the projection direction for the convenience of explanation, and the shapes of the first tiled island block 22A and the second tiled island block 24A of the present invention are not limited thereto. The shapes in the projection direction can be triangular, circular, or various polygonal shapes.

[0031] See also Figure 6 and Figure 5 , each tile island block 22A has a gap between each other to define a first gap between two adjacent tile island blocks 22A, and each tile island block 24A has a gap between each other to define a second gap between two adjacent tile island blocks 24A. Figure 6 As shown, part of the structure of the first composite hardened layer 12' extends downward due to the first notch. Furthermore, a second tile island 24A of the second tile layer 24 overlaps with a part of the area of ​​at least one first tile island 22A of the first tile layer 22 in the projection direction. In addition, the material of the first tile island 22A and the second tile island 24A is softer than the material of the first hard film layer 121 (141) and the second hard film layer 122 (142). Therefore, when the protective film structure 10 is squeezed and deformed by external force, such as when squeezed from top to bottom, the first composite hardened layer 12' can extend downward through the first notch to avoid rupture. When the external force squeezes from bottom to top, the first composite hardened layer 12' is advantageously extended upward to avoid rupture because it has a downward extending portion.

[0032] See also Figure 7 , is a cross-sectional view of a protective film structure 10 according to another embodiment of the present invention. The protective film structure 10 includes, for example, from top to bottom, an outer hard film layer 50, a third paving layer 26, a third composite hardened layer 16, a second paving layer 24, a first composite hardened layer 12, a first paving layer 22, a second composite hardened layer 14 and a transparent substrate 40.

[0033] The third tiling layer 26 includes a plurality of third tiling island blocks 26A. According to one embodiment of the present invention, each of the third tiling island blocks 26A may be, for example, an island-shaped protrusion having a trapezoidal cross-section, and the width of the upper base is smaller than the width of the lower base. Furthermore, each of the third tiling island blocks 26A has a gap between each other to define a third gap between two adjacent third tiling island blocks 26A. Similarly, the third tiling island blocks 26A are made of an organic material and have a thickness of not less than 0.5 micrometers (µm), and the organic material is, for example, an acrylic material or a photosensitive polyimide. Furthermore, the shape of the third tiling island blocks 26A of the present invention is not limited to the above-mentioned example shapes, as long as the shape can form a gap between adjacent third tiling island blocks 26A, it is within the scope of the present invention.

[0034] The third composite hardened layer 16 includes, for example, a first hard coat layer 161, a second hard coat layer 162 and a first hard coat layer 161 from top to bottom. Figure 7 In the embodiment shown, the first hard film layer 161 may be, for example, a silicon nitride material (SiNx) with a hardness greater than 6H (i.e., a pencil hardness of 6H); and the second hard film layer 162 may be, for example, a silicon oxide material (SiOx) with a hardness greater than 3H (i.e., a pencil hardness of 3H) or an acrylic material with a hardness greater than 1H (i.e., a pencil hardness of 1H). Figure 7 In the third composite hardened layer 16 shown, the hardness difference between two adjacent hard coat materials (ie, the first hard coat layer 161 and the second hard coat layer 162 ) is preferably not less than 3H pencil hardness, and the hardness of the first hard coat layer 161 is greater than that of the second hard coat layer 162 .

[0035] See also Figure 7 and Figure 5 , each of the first tile islands 22A has a gap between each other to define a first gap between two adjacent first tile islands 22A, and each of the second tile islands 24A is separated from each other to define a second gap between two adjacent second tile islands 24A. Figure 7 As shown, part of the structure of the first composite hardened layer 12 extends downward due to the first notch; part of the structure of the third composite hardened layer 16 also extends downward due to the second notch. Furthermore, a second tile island block 24A of the second tile layer 24 overlaps part of the area of ​​at least one first tile island block 22A of the first tile layer 22 in the projection direction, and a third tile island block of the third tile layer 26 overlaps part of the area of ​​at least one second tile island block of the second tile layer 24 in the projection direction.

[0036] In addition, the materials of the first tiled island block 22A, the second tiled island block 24A and the third tiled island block 26A are softer than the materials of the first hard coat layer 121 (141, 161) and the second hard coat layer 122 (142, 162). Therefore, when the protective film structure 10 is squeezed and deformed by an external force, such as when squeezed from top to bottom, the first composite hardened layer 12 and the third composite hardened layer 16 can respectively extend downward through the first notch and the second notch to avoid cracking. When the external force is squeezed from bottom to top, the first composite hardened layer 12 and the third composite hardened layer 16 are advantageously extended upward to avoid cracking because they respectively have downwardly extending portions. In the above-mentioned embodiments, the area of ​​each of the first tiled island blocks 22A and each of the second tiled island blocks 24A is not less than 250 square micrometers, respectively, and is not greater than 50 square millimeters, respectively.

[0037] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A protective film structure having a composite hardened layer, characterized in that: Include: A transparent substrate comprising a first surface and a second surface; At least two tiling layers, including: A first tiling layer, disposed on one side of the first surface of the transparent substrate, comprising a plurality of first tiling island blocks, wherein a gap is provided between adjacent first tiling island blocks; A second tiling layer is disposed on a side of the first tiling layer facing away from the transparent substrate, and comprises a plurality of second tiling island blocks, wherein a gap is formed between adjacent second tiling island blocks; At least one composite hardened layer is disposed between adjacent paving layers; Each of the composite hardened layers includes a first hard film layer and a second hard film layer. The first hard film layer and the second hard film layer are made of different materials, and the material hardness of the first hard film layer is greater than the material hardness of the second hard film layer.

2. The protective film structure with a composite hardened layer according to claim 1, characterized in that: A second tile island block of the second tile layer partially overlaps with a first tile island block of the first tile layer in the projection direction.

3. The protective film structure with a composite hardened layer according to claim 2, characterized in that: A second tiling island block of the second tiling layer overlaps partially with at least two different first tiling island blocks of the first tiling layer in the projection direction.

4. The protective film structure with a composite hardened layer according to claim 2, characterized in that: A second tiling island block of the second tiling layer overlaps partially with at least three different first tiling island blocks of the first tiling layer in the projection direction.

5. The protective film structure with a composite hardened layer according to claim 2, characterized in that: It further includes a third tiling layer located on the side of the second tiling layer facing away from the first tiling layer, the third tiling layer having a plurality of third tiling island blocks and a gap between adjacent third tiling island blocks, and a third tiling island block partially overlaps with a second tiling island block of the second tiling layer in the projection direction.

6. The protective film structure with a composite hardened layer according to claim 2, characterized in that: The area of ​​each of the first tiled island blocks and the area of ​​each of the second tiled island blocks are not less than 250 square microns.

7. The protective film structure with a composite hardened layer according to claim 2, characterized in that: The area of ​​each of the first tile island blocks and each of the second tile island blocks is not greater than 50 square millimeters.

8. The protective film structure with a composite hardened layer according to claim 1, characterized in that: The composite hardened layer includes three hard film layers.

9. The protective film structure with a composite hardened layer according to claim 1, characterized in that: The invention further comprises at least one hard coat layer sandwiched between the transparent substrate and the first tiling layer.

10. The protective film structure with a composite hardened layer according to claim 1, characterized in that: The invention further comprises an outer hard film layer, wherein the pencil hardness of the outer hard film layer is greater than 6 and the outer hard film layer is arranged on the side of the paving layer farthest from the transparent substrate and facing away from the substrate.

11. The protective film structure with a composite hardened layer according to claim 10, characterized in that: The outer hard film layer is a silicon nitride hard film with a thickness less than 1 μm.

12. The protective film structure with a composite hardened layer according to claim 1, characterized in that: Each of the tiling layers is made of organic material and has a thickness of not less than 0.5µm.

13. The protective film structure with a composite hardened layer according to claim 12, characterized in that: The organic material is acrylic material or photosensitive polyimide.

14. The protective film structure with a composite hardened layer according to claim 1, characterized in that: The transparent substrate is a polymer material substrate or an ultra-thin glass substrate with a thickness not greater than 200 μm.

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