CN110996591B - Decorative film, manufacturing method thereof and electronic equipment - Google Patents
Decorative film, manufacturing method thereof and electronic equipment Download PDFInfo
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- CN110996591B CN110996591B CN202010000395.0A CN202010000395A CN110996591B CN 110996591 B CN110996591 B CN 110996591B CN 202010000395 A CN202010000395 A CN 202010000395A CN 110996591 B CN110996591 B CN 110996591B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000003086 colorant Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000005034 decoration Methods 0.000 claims description 117
- 229920002120 photoresistant polymer Polymers 0.000 claims description 73
- 238000000034 method Methods 0.000 claims description 19
- 238000011161 development Methods 0.000 claims description 10
- 230000000007 visual effect Effects 0.000 abstract description 31
- 238000013461 design Methods 0.000 abstract description 17
- 238000012545 processing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- -1 Polyethylene terephthalate Polymers 0.000 description 1
- 235000005811 Viola adunca Nutrition 0.000 description 1
- 240000009038 Viola odorata Species 0.000 description 1
- 235000013487 Viola odorata Nutrition 0.000 description 1
- 235000002254 Viola papilionacea Nutrition 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
- H05K5/0243—Mechanical details of casings for decorative purposes
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Abstract
The invention relates to a decorative film which comprises a base film layer and a decorative layer. The base film layer is made of a light-transmitting material. The decorative layer is made of a light-transmitting material and is arranged on the base film layer. The decorative layer includes a first color portion and a second color portion, the first color portion and the second color portion having different colors. The first color parts are provided with at least two parts, the at least two first color parts are spaced, and the first color parts and the second color parts are arranged in a staggered mode. The invention also relates to an electronic device and a manufacturing method of the decorative film. Above-mentioned decorating film sets up different colours and crisscross first colour portion and second colour portion each other in the decorative layer, can present the visual effect that different colours are crisscross each other. The decorative film has diversified designs, and can meet the requirements of appearance design.
Description
Technical Field
The invention relates to the technical field of electronic equipment decoration, in particular to a decorative film, a manufacturing method thereof and electronic equipment.
Background
In recent years, there has been a growing demand for designing the appearance of electronic devices such as mobile phones and tablet personal computers, and it is desired to make the electronic devices more beautiful by the appearance design. In the conventional electronic device, the appearance of the shell is changed by changing the surface color of the shell of the electronic device or changing the material of the shell, so that the electronic device is more attractive. However, the traditional electronic device has limited choices of colors and materials of the shell, and it is difficult to meet the requirements of people on appearance design only by changing the colors and materials of the shell.
Disclosure of Invention
Accordingly, there is a need to provide a decorative film, a method for manufacturing the same, and an electronic device, which can solve the problems that the selection of colors and materials of the housing is limited and the design requirements of the appearance are difficult to satisfy.
A decorative film, comprising:
the base film layer is made of a light-transmitting material; and
the decorative layer is made of a light-transmitting material and is arranged on the base film layer, the decorative layer comprises a first color portion and a second color portion, the first color portion and the second color portion are different in color, the number of the first color portion is at least two, the at least two first color portions are spaced, and the first color portion and the second color portion are arranged in a staggered mode.
In one embodiment, in the cross section of the decoration film, the boundary line of the first color part and the second color part is perpendicular to or inclined to the surface of the base film layer facing the decoration layer; or
In a cross section of the decoration film, an intersection line of the first color portion and the second color portion is an arc line.
In one embodiment, on the surface of the base film layer facing the decoration layer, the boundary line of the first color part and the second color part is parallel; or
On the surface of the base film layer facing the decoration layer, the boundary line of the first color part and the second color part or the extension line of the boundary line of the first color part and the second color part are intersected; or
On the surface of the base film layer facing the decoration layer, the boundary line of the first color part and the second color part is an arc line.
In one embodiment, when the boundary line of the first color part and the second color part intersects, the boundary lines of the first color part and the second color part or the extension lines of the boundary lines of the first color part and the second color part intersect at a point.
In one embodiment, the first color portions include at least two first color blocks having a stacked structure and being shifted from each other, the second color portions include at least two second color blocks having a stacked structure and being shifted from each other, and the number of the first color blocks in one of the first color portions is equal to the number of the second color blocks in one of the second color portions.
In one embodiment, the decorative film further comprises an ink layer disposed on a side of the decorative layer facing away from the base film layer.
An electronic device comprises a shell and the decorative film in any one of the embodiments, wherein the decorative film is arranged on the outer surface of the shell, and the base film layer is arranged on one side, away from the shell, of the decorative layer.
A manufacturing method of a decorative film comprises the following steps:
arranging a layer of first color photoresist on the base film layer, wherein the first color photoresist is a light-transmitting material;
removing parts of the first color photoresist by adopting exposure and development processes to form at least two first color parts which are mutually spaced;
and arranging a second color photoresist on the base film layer at a position staggered with the first color part to form a second color part, wherein the second color photoresist is a light-transmitting material with a color different from that of the first color photoresist, and the first color part and the second color part are staggered with each other to form a decorative layer.
In one embodiment, after the decorative layer is formed, the method for manufacturing the decorative film further comprises disposing an ink layer on a side of the decorative layer facing away from the base film layer.
In one embodiment, after the second color photoresist is disposed on the base film layer at a position staggered from the first color portion, the method for manufacturing the decoration film further includes removing a portion of the second color photoresist covering the first color portion and a portion of the second color photoresist overflowing the decoration layer by using an exposure and development process to form the second color portion.
Above-mentioned decorating film sets up different colours and first colour portion and the second colour portion that interlocks each other in the decorative layer, can demonstrate the visual effect that multiple different colours are crisscross each other, applies to on the electronic equipment, enables electronic equipment more pleasing to the eye, and diversified design also can satisfy the requirement of people to the appearance design.
The decorative film prepared by the manufacturing method of the decorative film can show the visual effect of different colors which are mutually staggered. The ornamental property of the electronic equipment can be enhanced when the method is applied to the electronic equipment. The prepared decorative film has various different designs, and can meet the requirements of people on appearance design.
Drawings
FIG. 1 is a schematic view of a decorative film according to a first embodiment of the present application;
FIG. 2 is a schematic view of another angle of the decoration film shown in FIG. 1;
FIG. 3 is a schematic view of a decorative film according to a second embodiment of the present application;
FIG. 4 is a schematic view of a decorative film according to a third embodiment of the present application;
FIG. 5 is a schematic view of a decorative film according to a fourth embodiment of the present application;
FIG. 6 is a schematic view of a decorative film according to a fifth embodiment of the present application;
FIG. 7 is a schematic view of a decorative film according to a sixth embodiment of the present application;
FIG. 8 is a schematic view of a method of manufacturing a decorative film according to an embodiment of the present disclosure;
FIG. 9 is a schematic view of exposing a first color photoresist to light in the manufacturing method shown in FIG. 8;
FIG. 10 is a schematic view of a first color portion formed in the manufacturing method shown in FIG. 8;
FIG. 11 is a schematic view of a second color photoresist provided in the manufacturing method shown in FIG. 8.
Wherein,
First color photoresist 210
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "inner", "outer", "left", "right" and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1 and 2, a decoration film 100 includes a base film layer 110 having a laminated structure, a decoration layer 120, and an ink layer 130, wherein the base film layer 110 and the decoration layer 120 are made of a light-transmitting material. When the decoration film 100 is attached to the surface of the object to be decorated, the ink layer 130 in the decoration film 100 is attached to the surface of the object to be decorated, the base film layer 110 is located on the side of the decoration film 100 away from the surface of the object to be decorated, and the decoration layer 120 is located between the ink layer 130 and the base film layer 110. Base film layer 110 provides support and protection for decorative layer 120. Moreover, the decoration layer 120 can present a visual effect of two different colors interlaced with each other on one side of the base film layer 110. The ink layer 130 can shield the surface of the object to be decorated, so as to prevent the object to be decorated from affecting the visual effect of the decoration layer 120.
Specifically, the decoration layer 120 includes a first color part 121 and a second color part 123, and the first color part 121 and the second color part 123 have different colors. The first color portions 121 are at least two, the at least two first color portions 121 are spaced apart, and the first color portions 121 and the second color portions 123 are interlaced with each other to form a visual effect that different colors are interlaced with each other. In some embodiments, referring to fig. 1, the first color parts 121 are provided with four spaced apart from each other, and the second color parts 123 are provided with three spaced apart from each other, the first color parts 121 and the second color parts 123 being staggered from each other. Of course, there may be other arrangements of the first color portions 121, for example, the number of the first color portions 121 may be five, seven, eight or nine, and the second color portions 123 are correspondingly arranged according to the number of the first color portions 121, so that the first color portions 121 and the second color portions 123 are interlaced with each other. In addition, the colors of the first color portion 121 and the second color portion 123 can be selected in various ways. For example, in some embodiments, first color portion 121 is red and second color portion 123 is blue to create a visual effect of red and blue being interlaced with each other. It is to be understood that the color of the first color part 121 and the color of the second color part 123 may be two colors having a large difference in chromaticity, such as red and blue, or two colors having a small difference in chromaticity, such as deep blue and light blue. Further, the larger the difference between the color of the first color part 121 and the chromaticity of the color of the second color part 123, the more obvious the visual effect of the two colors being interlaced with each other is.
It should be noted that in some embodiments, the decoration layer 120 may also include more color portions with different colors, for example, the decoration layer 120 includes three, four or five color portions with different colors, and the color portions with different colors are disposed in a staggered manner to present a visual effect of mutually staggered colors.
Further, referring to fig. 2, in some embodiments, on the surface of the base film layer 110 facing the decoration layer 120, the boundary lines of the first color portion 121 and the second color portion 123 are parallel. At this time, the projections of the first color portion 121 and the second color portion 123 on the surface of the base film layer 110 facing the decoration layer 120 may be rectangular. In this way, the first color portions 121 and the second color portions 123 are sequentially and regularly arranged on the base film layer 110 side of the decoration film 100, so as to form a visual effect that two colors are mutually staggered and regularly change. As shown in fig. 3, in some embodiments, on the surface of the base film layer 110 facing the decoration layer 120, the extension lines of the boundary lines of the first color portions 121 and the second color portions 123 intersect, and at this time, each of the first color portions 121 and each of the second color portions 123 may have different structures. Of course, in some embodiments, the boundary lines between the different first color portions 121 and the second color portions 123 on the surface of the base film layer 110 facing the decoration layer 120 may also directly intersect with each other. Further, in some embodiments, the boundary line of the first color portion 121 and the second color portion 123 intersects at a point on the surface of the base film layer 110 facing the decoration layer 120, or the extension lines of the first color portion 121 and the second color portion 123 intersect at a point on the extension plane of the surface of the base film layer 110 facing the decoration layer 120. With this arrangement, on the base film layer 110 side of the decoration film 100, the decoration film 100 can present a visual effect that two different colors diverge outward and are staggered along a point on the extension surface of the base film layer 110 toward the surface of the decoration layer 120 or the extension surface of the base film layer 110 toward the surface of the decoration layer 120, thereby increasing the ornamental value of the decoration film 100. The diversified arrangement of the decoration layer 120 also provides more choices for designing the decoration film 100 to present more different visual effects to satisfy the requirements of people for appearance design.
In addition, referring to fig. 4, in some embodiments, on the surface of the base film layer 110 facing the decoration layer 120, the boundary line of the first color portion 121 and the second color portion 123 may also be an arc line. Specifically, the boundary lines of the first color portion 121 and the second color portion 123 may form the same line pattern to present a regular arrangement of visual effects, and may also form different line patterns to present a diversified visual effect in one decoration layer. Further, referring to fig. 4, in some embodiments, the boundary line between the first color portion 121 and the second color portion 123 may form a wave-shaped line pattern, and each wave-shaped line pattern is sequentially and regularly arranged to present a visual effect that two different colors are interlaced with each other and jointly form the wave-shaped pattern. Of course, referring to fig. 5, in some embodiments, the boundary line between the first color portion 121 and the second color portion 123 on the surface of the base film layer 110 facing the decoration layer 120 may also be a closed line. Also, the boundary line between the first color portion 121 and the second color portion 123 may be formed in a regular shape, such as a circle, an ellipse, a triangle, a rectangle, etc. Specifically, when the boundary line between the first color portion 121 and the second color portion 123 forms a circle, the projection of the first color portion 121 and the second color portion 123 on the surface of the base film layer 110 facing the decoration layer 120 is annular. At this time, the decoration layer 120 may present a visual effect that the two circles with different colors are staggered and regularly arranged from inside to outside. Of course, in other embodiments, the boundary line between the first color portion 121 and the second color portion 123 may also form an irregular closed line to present diversified visual effects.
It should be noted that, in some embodiments, the projected area of each of the first color portions 121 spaced apart from each other on the surface of the base film layer 110 facing the decoration layer 120 may be the same or different. The areas of the projections of the adjacent first color portions 121 and the adjacent second color portions 123 on the surface of the base film layer 110 facing the decoration layer 120 may be the same or different. Specifically, the patterns and visual effects that need to be presented by the actual decoration film 100 can be selected, and the diversified selections enable the decoration film 100 to present more types of visual effects, so that the requirements of appearance design are met.
Referring to fig. 6, in some embodiments, in the cross section of the decoration film 100, the boundary line of the first color portion 121 and the second color portion 123 is inclined to the surface of the base film layer 110 facing the decoration layer 120. So configured, each portion of the decoration layer 120 can present a visual effect with different colors. For example, when the a region of the decoration layer 120 is viewed from the base film layer 110 side of the decoration film 100 at an angle perpendicular to the base film layer 110, since the portion of the decoration layer 120 located in the a region is the first color portion 121, the color of the first color portion 121 is observed. Similarly, when the C region is observed, the observed color is the color of the second color part 123. When the B region is observed, since the part of the decoration layer 120 located in the B region includes both the first color portion 121 and the second color portion 123 in the direction perpendicular to the surface of the base film layer 110 facing the decoration layer 120, the observed color is the superposition of the color of the first color portion 121 and the color of the second color portion 123. For example, the color of the first color portion 121 is red, and the color of the second color portion 123 is blue, the color of the decoration layer 120 in the B area is purple formed by overlapping red and blue.
Moreover, since the proportion of the first color portion 121 and the second color portion 123 is different in the B region in the direction perpendicular to the surface of the base film layer 110 facing the decoration layer 120, the B region can also present a visual effect of color gradient. For example, in the B region, the region where the proportion of the first color portion 121 is larger than that of the second color portion 123 exhibits a color more shifted toward red-purple, and the region where the proportion of the first color portion 121 is smaller than that of the second color portion 123 exhibits a color more shifted toward blue-purple. In addition, in the B region, since the ratio of the first color portion 121 to the second color portion 123 is changed, the B region can exhibit a visual effect of color gradation, for example, gradation from magenta to blue-violet. Thus, in the cross section of the decoration film 100, when the boundary line of the first color part 121 and the second color part 123 is inclined to the surface of the base film layer 110 facing the decoration layer 120, the decoration film 100 can present the visual effect of two-color interlacing in the a region and the C region, and the visual effect of color gradation in the B region. Specifically, in some embodiments, the boundary line between the first color portion 121 and the second color portion 123 may also be any irregular arc line in the cross section of the decoration film 100, and at this time, at the boundary between the first color portion 121 and the second color portion 123, the decoration film 100 can also present a visual effect of color gradient due to the different proportion of the first color portion 121 and the second color portion 123.
In addition, referring to fig. 1 again, in some embodiments, in the cross section of the decoration film 100, the boundary line between the first color portion 121 and the second color portion 123 may also be perpendicular to the surface of the base film layer 110 facing the decoration layer 120. With this arrangement, when the decoration layer 120 is viewed from the base film layer 110 side of the decoration film 100 at an angle perpendicular to the base film layer 110, the color of each part of the first color portion 121 in the decoration layer 120 is the same, and the color of each part of the second color portion 123 in the decoration layer 120 is also the same.
It should be noted that, in the above embodiments, the cross section of the decoration film 100 and the surface of the base film layer 110 facing the decoration layer 120 may have any suitable line shape formed by the boundary line of the first color portion 121 and the second color portion 123. For example, in some embodiments, in the cross section of the decoration film 100, the boundary line of the first color portion 121 and the second color portion 123 is inclined to the surface of the base film layer 110 facing the decoration layer 120. On the surface of the base film layer 110 facing the decoration layer 120, the boundary line between the first color portion 121 and the second color portion 123 forms a wavy line pattern. In this way, the decoration film 100 can present a visual effect of gradually changing colors and forming wave patterns with different colors.
Further, referring to fig. 7, in some embodiments, the first color portion 121 includes two first color blocks 122 having a stacked structure and being staggered with respect to each other, and the second color portion 123 includes at least two second color blocks 124 having a stacked structure and being staggered with respect to each other. In this way, in the direction perpendicular to the surface of the base film layer 110 facing the decoration layer 120, only the first color portion 121 is included in the partial region, such as the region F in fig. 7, and the region F is observed perpendicularly on the base film layer 110 side of the decoration film 100, and the observed color is the color of the first color portion 121, such as red. Similarly, the color observed in the D region is the color of the second color portion 122, such as blue. And in the region E, the observed color is a color in which the color of the first color portion 121 is superimposed on the color of the second color portion 123, for example, purple formed by superimposing red and blue.
It should be noted that, at this time, in the E region, since the proportion of the first color portion 121 and the second color portion 123 is the same in the direction perpendicular to the surface of the base film layer 110 facing the decoration layer 120, the decoration film 100 can only present the color in which the colors of the first color portion 121 and the second color portion 123 are superimposed in the E region, and cannot present the visual effect of color gradation. It is understood that, at this time, the decoration film 100 can exhibit the visual effect in which the three colors are interlaced with each other. Of course, in other embodiments, a plurality of first color blocks 122 having a stacked structure and being staggered with each other may also be included in the first color portion 121, for example, three, four or five first color blocks 122 having a stacked structure and being staggered with each other are included in the first color portion 121. At this time, the number of the second color blocks 124 in the second color portions 123 should also be adjusted accordingly so that the number of the first color blocks 122 in one first color portion 121 is equal to the number of the second color blocks 124 in one second color portion 123.
In addition, in some embodiments, referring to fig. 1, the ink layer 130 is disposed on a side of the decoration layer 120 away from the base film layer 110, when the decoration film 100 is attached to the surface of the object to be decorated, the ink layer 130 in the decoration film 100 is attached to the surface of the object to be decorated, and the ink layer 130 is an opaque material capable of shielding the surface of the object to be decorated. For example, when the object to be modified is an electronic device, the ink layer 130 can shield the circuit structure inside the object to be modified. When the surface of the object to be decorated has a pattern or a color, the ink layer 130 can shield the surface of the object to be decorated, so as to prevent the pattern or the color on the surface of the object to be decorated from affecting the visual effect of the decoration film 100. Specifically, in some embodiments, the surface of ink layer 130 facing decorative layer 120 may also be provided with a color, and in this case, decorative film 100 presents the color of ink layer 130 and the color of decorative layer 120 as a superposition.
In some embodiments, the decoration film 100 can be used in an electronic device (not shown). Specifically, the decoration film 100 may be applied to various electronic devices such as smart phones, tablet computers, and televisions. The electronic device further includes a housing, and the ink layer 130 in the decoration film 100 is attached to an outer surface of the housing. By adopting the decorative film 100 in the electronic device, the visual effect of different colors which are mutually staggered can be presented, and the ornamental property of the electronic device is increased. In addition, the decoration film 100 has various choices in design, and can satisfy the requirements of people for appearance design.
Referring to fig. 8, a method for manufacturing a decorative film 100 can be used to manufacture the decorative film 100 according to any of the above embodiments. In some embodiments, the first color portion 121 and the second color portion 123 of the decoration film 100 both include photoresist, and the manufacturing method of the decoration film 100 includes the following steps:
s110, referring to fig. 9, a layer of first color photoresist 210 is disposed on the base film layer 110.
In some embodiments, the base film layer 110 may be made of a light-transmitting material such as Polycarbonate (PC) or Polyethylene terephthalate (PET). And the first color photoresist 210 may be a positive photoresist or a negative photoresist having a light transmitting property. Also, in some embodiments, the first color photoresist 210 may be colored by doping a pigment in the first color photoresist 210. In addition, in some embodiments, a layer of first color photoresist 210 may be formed on the base film layer 110 by a spin coating process. For example, the base film layer 110 is placed on a spin coater, a photoresist material is coated on the surface of the base film layer 110, the spin coater drives the base film layer 110 to rotate, and the photoresist material is coated by centrifugal force to form a layer of the first color photoresist 210. The first color photoresist 210 prepared by the spin coating process has a relatively uniform thickness distribution.
S02, the first color photoresist 210 is partially removed by exposing and developing to form at least two first color portions 121 spaced apart from each other.
Referring to fig. 9, a first color photoresist 210 is exposed by a reticle 220. If the first color photoresist 210 is a positive photoresist, the portion of the first color photoresist 210 to be removed during the exposure process should be opposite to the blank region, such as the G region in the figure, in the mask 220. At this time, the shape of the blank area of the mask 220 may be designed according to the shape of the portion of the first color photoresist 210 that needs to be removed, so that the shape of the projection of the blank area of the mask 220 and the portion of the first color photoresist 210 that needs to be removed on the surface of the mask 220 facing the decoration film 100 is the same. Light is irradiated onto a region of the first color photoresist 210 to be removed through the blank region of the mask 220, so that the first color photoresist 210 in the region is chemically changed and dissolved in a developing solution. The first color photoresist 210 is then treated with a developing solution, and at this time, the portions of the first color photoresist 210 irradiated with light are removed by dissolving in the developing solution, and as shown in fig. 10, the portions not removed by the developing solution remain to form the first color portions 121 spaced apart from each other. It is understood that in other embodiments, the first color photoresist 210 can also be a negative photoresist, and the regions of the first color photoresist 210 that need to be preserved are opposite to the blank regions of the mask 220 during the exposure process. Light is irradiated onto a region of the first color photoresist 210 to be preserved through the blank region of the mask 220, so that the photoresist in the region is chemically changed and is insoluble in a developing solution, and at this time, the portion of the first color photoresist 210 which is not irradiated with light is dissolved in the developing solution. Then, the portions of the first color photoresist 210 that are not irradiated with light are dissolved using a developing solution, and the remaining portions form the first color portions 121 spaced apart from each other.
S03, referring to fig. 11, a second color photoresist 230 is disposed on the base film layer 110 at a position staggered from the first color portion 121 to form a second color portion 123, the second color photoresist 230 is a transparent material with a color different from that of the first color photoresist 210, and the first color portion 121 and the second color portion 123 are interlaced to form the decoration layer 120.
It is understood that the second color photoresist 230 may be a positive photoresist or a negative photoresist. In addition, in step S03, when the second color photoresist 230 is disposed, a portion of the second color photoresist 230 may overflow the decoration layer 120 or cover the first color portion 121. Therefore, in some embodiments, after step S03, the portion of the second color photoresist 230 covering the first color portion 121 and the portion overflowing the decorative layer 120 may be further removed through the processes of exposure and development to form the second color portion 123. Further, in order to avoid the influence on the first color portion 121 when the second color photoresist 230 covers the portion of the first color portion 121, in some embodiments, the second color photoresist 230 may be a negative photoresist, and at this time, the light irradiates the portion of the second color photoresist 230 to be reserved through the mask 220 without affecting the first color portion 121. Likewise, in some embodiments, the portions of first color photoresist 210 that need to be removed in step S02 also include the portions of first color photoresist 210 that overflow the extent of decorative layer 120.
Further, in the present application, the first color photoresist 210 and the second color photoresist 230 may be exposed and developed by using different process means. For example, in some embodiments, the exposure and development is performed using a yellow light process, where the ambient illumination source during the exposure and development is yellow light. In yet other embodiments, laser direct writing techniques may be used for exposure and development. The laser beam with variable intensity is controlled by a computer to carry out high-precision exposure on the photoresist, and the exposed area on the photoresist is precisely controlled by the computer, so that the shape of the photoresist left after development is higher in matching precision with the shape of the photoresist required by design, the size precision of the manufactured decorative film 100 is higher, and the requirement of the design precision is met.
In addition, referring to fig. 7, in some embodiments, the steps S01, S02, and S03 may be repeated on the base film layer 110. It can be understood that after the first color cell 122 and the second color cell 124 are formed on the base film layer 110 in a layer and staggered with each other through the steps S01, S02 and S03, the steps S01, S02 and S03 are repeated again on the side of the layer, away from the base film layer 110, of the first color cell 122 and the second color cell 124, and then a layer of the first color cell 122 and the second color cell 124 are formed and staggered with each other, and the first color cell 122 formed later and the first color cell 122 formed earlier have a stacked structure and are staggered with each other, thereby forming the decoration film 100 shown in fig. 7. At this time, in the decoration film 100, each of the first color portions 121 includes two first color cells 122 having a laminated structure and being shifted from each other, and each of the second color portions 123 includes two second color cells 124 having a laminated structure and being shifted from each other. Of course, in other embodiments, the steps S01, S02 and S03 may be repeated on the base film layer 110 multiple times, so that each of the first color portions 121 includes a plurality of first color blocks 122 having a stacked structure and being staggered with each other.
Specifically, referring to fig. 6, if the first color photoresist 210 is a positive photoresist, the boundary line between the first color portion 121 and the second color portion 123 in the cross section of the decoration film 100 can be inclined or curved with respect to the surface of the base film layer 110 facing the decoration layer 120 by controlling the exposure or development time of different portions of the portion of the first color photoresist 210 to be removed. Specifically, in some embodiments, if the thickness of the portion of the first color part 121 that needs to be reserved in the direction perpendicular to the surface of the base film layer 110 facing the decoration layer 120 in the B region of fig. 6 is larger (e.g., the thickness of the portion of the first color part 121 that is closer to the a region is larger), the exposure time of the portion is controlled to be shorter. On the other hand, if the thickness of the portion of the first color part 121 that needs to be left is smaller (e.g., the thickness of the portion of the first color part 121 located in the B region closer to the C region is smaller), the exposure time of the portion is controlled to be longer. Thus, the shorter the exposure time, the less the portion removed when the portion is treated with the developer, and the longer the exposure time, the more the portion removed when the portion is treated with the developer. So as to realize the effect that the boundary line of the first color part 121 and the second color part 123 is inclined to the surface of the base film layer 110 facing the decoration layer 120 or is an arc line in the cross section of the decoration film 100. In other embodiments, the processing time of the developing solution may be controlled, and if the portion of the first color part 121 that needs to be removed in the direction perpendicular to the surface of the base film layer 110 facing the decoration layer 120 in the region B of fig. 6 is more, the processing time of the developing solution in the portion is controlled to be longer. On the other hand, the less the portion of the first color portion 121 needs to be removed, the shorter the processing time for controlling the developer in the portion. Thus, the more the portion having the longer developer treatment time is removed, the less the portion having the shorter developer treatment time is removed. So as to realize the effect that the boundary line of the first color part 121 and the second color part 123 is inclined to the surface of the base film layer 110 facing the decoration layer 120 or is an arc line in the cross section of the decoration film 100.
S04, disposing an ink layer 130 on a side of the decoration layer 120 facing away from the base film layer 110 to form the decoration film 100 shown in fig. 1.
The decorative film 100 manufactured by the manufacturing method of the decorative film 100 can show the visual effect of different colors which are mutually staggered, and can be applied to electronic equipment to enhance the ornamental performance of the electronic equipment. The manufactured decorative film 100 has various different designs, and can meet the requirements of people on appearance design.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for manufacturing a decorative film, comprising the steps of:
arranging a layer of first color photoresist on the base film layer, wherein the first color photoresist is a light-transmitting material;
removing parts of the first color photoresist by adopting exposure and development processes to form at least two first color parts which are mutually spaced;
arranging a second color photoresist on the base film layer at a position staggered with the first color part to form a second color part, wherein the second color photoresist is a light-transmitting material with a color different from that of the first color photoresist, and the first color part and the second color part are staggered with each other to form a decorative layer;
and repeating the steps, forming a layer of first color parts and second color parts which are mutually staggered above the first color parts and the second color parts, and forming a laminated structure by the first color parts formed later and the first color parts formed earlier and mutually dislocating the first color parts and the second color parts.
2. The method of manufacturing a decorative film according to claim 1, further comprising providing an ink layer on a side of the decorative layer facing away from the base film layer after the decorative layer is formed.
3. The method of manufacturing an ornamental film according to claim 1, wherein after providing a second color resist on said base film layer at a position shifted from said first color portion, said method further comprises removing a portion of said second color resist covering said first color portion and a portion of said second color resist which is over said ornamental layer by exposure and development processes to form said second color portion.
4. An ornamental film, characterized by being produced by the method for producing an ornamental film according to any one of claims 1 to 3, comprising:
the base film layer is made of a light-transmitting material;
the decorative layer is made of a light-transmitting material and is arranged on the base film layer, the decorative layer comprises first color parts and second color parts, the first color parts and the second color parts have different colors, at least two first color parts are arranged, at least two first color parts are spaced, and the first color parts and the second color parts are arranged in a staggered mode; and
the printing ink layer is arranged on one side, away from the base film layer, of the decoration layer, and the printing ink layer is attached to the surface of the decorated body and provided with colors.
5. The decoration film according to claim 4, wherein, in a cross section of the decoration film, a boundary line of the first color portion and the second color portion is perpendicular or oblique to a surface of the base film layer facing the decoration layer; or
In a cross section of the decoration film, an intersection line of the first color portion and the second color portion is an arc line.
6. The decoration film according to claim 4, wherein the first color portion and the second color portion are parallel to each other on the surface of the base film layer facing the decoration layer; or
On the surface of the base film layer facing the decoration layer, the boundary line of the first color part and the second color part or the extension line of the boundary line of the first color part and the second color part are intersected; or
On the surface of the base film layer facing the decoration layer, the boundary line of the first color part and the second color part is an arc line.
7. The decoration film according to claim 6, wherein when the boundary line of the first color portion and the second color portion intersects, the boundary lines of the first color portion and the second color portion or the extension lines of the boundary lines of the first color portion and the second color portion intersect at a point.
8. The decoration film according to claim 4, wherein the first color portions include at least two first color cells having a laminated structure and being offset from each other, and the second color portions include at least two second color cells having a laminated structure and being offset from each other, and the number of the first color cells in one of the first color portions is equal to the number of the second color cells in one of the second color portions.
9. The decorative film of any one of claims 4-8, wherein the ink layer is an opaque material.
10. An electronic device, comprising a housing and the decoration film of any one of claims 4-9, wherein the decoration film is disposed on an outer surface of the housing, and the base film layer is disposed on a side of the decoration layer facing away from the housing.
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