阅读说明：本技术 光学成像膜 (Optical imaging film ) 是由 郑伟伟 申溯 张海英 于 2019-08-26 设计创作，主要内容包括：本申请提供了一种光学成像膜,该光学成像膜包括成像层和微图文层,成像层包括多个呈周期分布的成像结构；微图文层包括多个周期分布的微图文,且微图文与成像结构对应设置,以使光学成像膜形成一个具有放大效果的目标图像；其中微图文为目标图像的部分图形,且多个微图文能够组成与目标图像一致的完整图形。与传统的光学成像膜相比,本申请提供光学成像膜具有可显示更大莫尔图像的有益效果。(The application provides an optical imaging film, which comprises an imaging layer and a micro-image-text layer, wherein the imaging layer comprises a plurality of imaging structures which are periodically distributed; the micro image-text layer comprises a plurality of micro image-texts which are distributed periodically, and the micro image-texts are arranged corresponding to the imaging structure so that the optical imaging film forms a target image with an amplification effect; the micro-image-text is a partial image of the target image, and the plurality of micro-image-texts can form a complete image consistent with the target image. The present application provides optical imaging films that have the benefit of displaying larger moir images than conventional optical imaging films.)

1. An optical imaging film, comprising:

an imaging layer comprising a plurality of imaging structures in a periodic distribution;

the micro image-text layer comprises a plurality of micro image-texts which are distributed periodically, and the micro image-texts are arranged corresponding to the imaging structure so that the optical imaging film forms a target image with an amplification effect;

the micro-image-text is a partial image of the target image, and a plurality of micro-image-texts can form a complete image consistent with the target image.

2. The optical imaging film of claim 1, wherein the microimages are partial images of the complete image;

and the complete graph is divided into N equal parts, and each micro graph-text is 1/N of the complete graph.

3. The optical imaging film of claim 1, wherein the microimages are partial images of the complete image;

the complete graph is divided into N equal parts, and in each micro graph text, at least part of the micro graph text is larger than 1/N of the complete graph.

4. The optical imaging film of claim 1, wherein the microimages comprise one or more of printed images, embossed images, and filled images.

5. The optical imaging film of claim 1, wherein the imaging structure is one or more of a cylindrical mirror, a micro-lens, or a fresnel lens.

6. The optical imaging film of claim 1, further comprising a substrate layer, wherein the imaging layer and the microimage layer are disposed on two sides of the substrate layer.

7. The optical imaging film as claimed in claim 6, wherein the micro-image-text layer is disposed on a side of the substrate layer away from the imaging layer by silk-screen printing or etching.

8. The optical imaging film of claim 6, wherein a side of the substrate layer facing away from the imaging layer is provided with a recess;

the concave part forms the micro-image-text layer, and the concave part is filled with colored filler.

9. The optical imaging film of claim 6, wherein the imaging layer is disposed on a side of the substrate layer facing away from the microimage-text layer by UV offset imprint curing.

10. The optical imaging film of claim 6, further comprising a reflective layer disposed on a side of the imaging layer facing away from the substrate layer.

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of optical films, in particular to an optical imaging film.

[ background of the invention ]

The imaging and display technology is receiving more and more attention, the imaging technology realized based on the micro lens has great potential and development prospect by virtue of the advantages of complete parallax, continuous viewpoint, no need of any observation glasses, no special illumination and the like, is gradually developed into the automatic display technology with the most potential and prospect, and the imaging technology generally adopts the Moire imaging technology to form the optical imaging film. The optical imaging film typically includes a graphics layer having a plurality of micrographics and an imaging layer, which typically includes a plurality of microlenses that interact with the graphics layer to form an image having a magnifying effect. The micro-lens is an artificially designed functional structure with characteristic dimension of micron or nanometer scale and arranged according to a specific mode, has the characteristics of light weight, high design freedom, flexible structure and the like, and has remarkable advantages in the field of optical imaging.

However, in the above-mentioned imaging method, the size of the formed image is related to the size of the micro-image and the micro-lens, and the size of the micro-image and the micro-lens itself is limited, so that the size of the formed image is limited, that is, the magnification of the optical imaging film is low.

[ summary of the invention ]

In view of this, embodiments of the present disclosure provide an optical imaging film, so as to solve the problem of low magnification of the optical imaging film in the prior art.

The present application provides an optical imaging film comprising:

an imaging layer comprising a plurality of imaging structures in a periodic distribution;

the micro image-text layer comprises a plurality of micro image-texts which are distributed periodically, and the micro image-texts are arranged corresponding to the imaging structure so that the optical imaging film forms a target image with an amplification effect;

the micro-image-text is a partial image of the target image, and a plurality of micro-image-texts can form a complete image consistent with the target image.

In one possible design, the micro-graph is a partial graph of the complete graph;

and the complete graph is divided into N equal parts, and each micro graph-text is 1/N of the complete graph.

In one possible design, the micro-graph is a partial graph of the complete graph;

the complete graph is divided into N equal parts, and in each micro graph text, at least part of the micro graph text is larger than 1/N of the complete graph.

In one possible design, the micro-image-text comprises one or more of printing image-text, relief image-text and filling image-text.

In one possible design, the imaging structure is one or more of a cylindrical mirror, a micro-lens, or a fresnel lens.

In one possible design, the optical imaging film further comprises a substrate layer, and the imaging layer and the micro-image-text layer are respectively arranged on two sides of the substrate layer.

In one possible design, the micro image-text layer is arranged on one side of the substrate layer, which is far away from the imaging layer, in a silk-screen printing or etching mode.

In one possible design, a side of the substrate layer facing away from the imaging layer is provided with a recess;

the concave part forms the micro-image-text layer, and the concave part is filled with colored filler.

In one possible design, the imaging layer is arranged on one side of the substrate layer, which is far away from the micro-image-text layer, through UV adhesive embossing and curing.

In one possible design, the optical imaging film further includes a reflective layer disposed on a side of the imaging layer facing away from the substrate layer.

By combining the technical scheme, the beneficial effects of the method are analyzed as follows:

the optical imaging film comprises a micro image-text layer and an imaging layer, wherein the imaging layer comprises a plurality of imaging structures which are periodically distributed, the micro image-text layer comprises a plurality of micro image-texts which are periodically distributed, and the micro image-text and the imaging structures are correspondingly arranged so that the optical imaging film forms a target image with an amplification effect; the micro-image-text is a partial image of the target image, and the plurality of micro-image-texts can form a complete image consistent with the target image.

Compared with the optical imaging film in the prior art, the micro-image-text provided by the application is equivalent to a 'redundant' part with the complete micro-image-text removed, and a 'useful' part participating in moire imaging is reserved, so that the micro-image-text can be arranged in a period unit area corresponding to an imaging structure to be larger, and the imaging size effect of the micro-image-text can be equivalent to the imaging size effect of 'the complete micro-image-text exceeding the period unit area', therefore, compared with the optical imaging film in the prior art, the optical imaging film provided by the application has the beneficial effect of displaying a larger target image under the same specification.

Additional features and advantages of embodiments of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of embodiments of the present application. The objectives and other advantages of the embodiments of the application will be realized and attained by the structure particularly pointed out in the written description and drawings.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a first structure of an optical imaging film provided in an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a second structure of an optical imaging film provided in an embodiment of the present disclosure;

FIG. 3 is a schematic view of an imaging layer in an optical imaging film provided by embodiments of the present disclosure;

FIG. 4 is a schematic view of a microimage layer in an optical imaging film according to embodiments of the present disclosure;

FIG. 5 is a schematic diagram of a third structure of an optical imaging film provided in the embodiments of the present application.

Reference numerals:

1-an imaging layer;

11-an imaging structure;

12-a reflective layer;

2-micro image-text layer;

21-micrographs;

3-a substrate layer;

31-recess.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The optical imaging film provided by the embodiment of the application solves the technical problem by improving the image-text layer in the optical imaging film.

Specific examples of the structure of the optical imaging film provided in the embodiments of the present application will be described below.

FIG. 1 is a schematic view of a first structure of an optical imaging film provided in an embodiment of the present disclosure; FIG. 2 is a schematic diagram of a second structure of an optical imaging film provided in an embodiment of the present disclosure; FIG. 3 is a schematic view of an imaging layer in an optical imaging film provided by embodiments of the present disclosure; FIG. 4 is a schematic view of a microimage layer in an optical imaging film according to embodiments of the present disclosure; FIG. 5 is a schematic diagram of a third structure of an optical imaging film provided in the embodiments of the present application.

The embodiment of the application also provides an optical imaging film, which comprises an imaging layer 1 and a micro-image-text layer 2; the imaging layer 1 comprises a plurality of imaging structures 11 in a periodic distribution; the micro-image-text layer 2 comprises a plurality of micro-image-texts 21 which are distributed periodically, and the micro-image-texts 21 are arranged corresponding to the imaging structure 11, so that the optical imaging film forms a target image with a magnifying effect; the micro-image 21 is a partial image of the target image, and the plurality of micro-images 21 can form a complete image consistent with the target image.

Therefore, the design idea of the scheme is as follows: compared with the traditional optical imaging film, the micro-image 21 provided by the application is equivalent to a 'redundant' part with the complete micro-image removed, and a 'useful' part participating in moire imaging is reserved, so that the micro-image 21 can be arranged in a corresponding period unit area of the imaging structure 11 to be larger, and the imaging size effect of the micro-image 21 can be equivalent to the imaging size effect of 'the complete micro-image exceeding the period unit area', therefore, compared with the traditional optical imaging film, the optical imaging film provided by the application has the beneficial effect of displaying a larger target image under the same specification. Equivalent specifications herein refer to imaging structures 11 of the same size and periodicity. That is, when the imaging structure 11 has the same magnification ratio, the micro-image 21 is set as a partial image, so that the partial image that has been enlarged can be set in the cycle unit area of the original micro-image 21, and the image formed can exhibit a larger magnification ratio. The size limit can be broken through, larger images can be obtained, and particularly, when the height or the depth of the images is limited, the larger images can be obtained, so that the market requirements are met.

In an alternative of this embodiment, the micrograph 21 is a partial graph of a complete micrograph, the complete micrograph is divided into N equal parts, and each micrograph 21 is 1/N of the complete micrograph.

It is noted that N is a positive integer greater than 1, and the shape of the equal parts may be various, such as triangular equal parts, rectangular equal parts, square equal parts, regular hexagonal equal parts, and the like.

Specifically, for example, when the target image displayed by the optical imaging film is a "field" character, the complete micro-image-text "field" 9 can be equally divided into 9 micro-images-texts 21, and the micro-images-texts are correspondingly arranged in the periodic unit areas distributed in each period according to the shape of the "field", and the images displayed by the micro-images-texts 21 under the action of the corresponding imaging structures 11 respectively correspond to different areas of the image of the target image, so that the optical imaging film is integrally imaged into the target image with a single amplification effect, namely the "field" character, and the imaging effect is relatively clear.

Moreover, because the complete 'field' micro-image-text is not arranged in each period unit area, the micro-image-text 21 containing part of the 'field' can be arranged in the period unit area, compared with the traditional complete micro-image-text, the 'complete micro-image-text' equivalent to the micro-image-text 21 divided by N times can be N times of the traditional complete micro-image-text, namely under the condition of the same specification, the imaging size of the optical imaging film provided by the embodiment of the application can be at least N times of that of the traditional optical imaging film.

For example, in actual production, the micro-patterns 21 are arranged in a square matrix periodic distribution, the distribution period of the micro-patterns 21 is 50 μm, and then in a periodic unit area of 50 μm × 50 μm, the complete micro-patterns of the conventional optical imaging film cannot exceed the periodic unit area of 50 μm × 50 μm, but with the micro-pattern layer 2 provided in the present application, although the micro-patterns 21 cannot exceed the periodic unit area of 50 μm × 50 μm, the equivalent size of the "complete micro-patterns" can completely exceed the periodic unit area. Thus, the micro-image-text layer 2 provided by the application can present larger moire image when the imaging layer 1 in the optical imaging film is used for carrying out moire magnification imaging.

The micro image-text layer 2 can be arranged in 0.7-1.3 times of focal length of the imaging layer 1, and the imaging layer 1 can perform better and clearer imaging on the micro image-text layer 2; the microimages 21 are arranged corresponding to the imaging structure 11, and are not mathematically absolute position relationships, for example, errors caused by manufacturing processes cause the period of the microimages 21 and the period of the imaging structure 11 to have a certain deviation, which should also be understood as falling within the protection scope of the present application.

Thirdly, the micro-images 21 are distributed periodically, and can be set to be in a square matrix periodic distribution as shown in fig. 4, or can be set to be in other periodic distribution forms such as a honeycomb periodic distribution, and the distribution period of the micro-images 21 refers to the distance between the central points of the adjacent micro-images 21.

Finally, for example, when the whole graphic "field" is divided into equal parts with a larger size, such as 9 × 9 equal parts, the whole graphic "field" is divided into blank areas, and those skilled in the art should adaptively set the micro-graphics context 21 corresponding to the blank areas as the blank areas. Therefore, each of the micrographs 21 presents a different image, which means that the image and the target image have different corresponding positions in the period, and the actual shape of the image presented by each of the micrographs 21 may be the same or different according to the actual shape of the target image.

In an alternative of this embodiment, the micrograph 21 is a partial graph of a complete micrograph; and dividing the complete micro-image-text into N equal parts, wherein at least part of the micro-image-text in each micro-image-text is larger than 1/N of the complete micro-image-text.

For example, when the optical imaging film displays that the target image is a "field" character, 9 cycle unit areas are set, and the size of the micro-image 21 in each cycle unit area can be 2/9, 5/9 and the like of the complete micro-image, as long as it is ensured that all the micro-images 21 can correspondingly form a complete micro-image and the sizes of the equivalent "complete micro-images" of all the micro-images 21 are consistent, the optical imaging film can also present the target image "field" character with a single amplification effect. That is, if N microimages 21 are provided, each microimage 21 of the N microimages 21 may be provided with only an equally divided portion, or may be diffused around the equally divided portion to form a larger portion; because each of the micrographs 21 includes a portion that is divided equally, at least one complete micrographs can be combined regardless of the overlap.

In addition, the distribution of the complete micro-image-text corresponding to the partial image-text of each micro-image-text 21 exceeds the unit area where the micro-image-text 21 is located, but each micro-image-text 21 actually presents the part in the unit area corresponding to the complete micro-image-text, so that the partial image-text of the micro-image-text 21 can be maximally set to be as large as the unit area, and the minimum part is the equally divided part, and of course, any intermediate value can be taken from the maximum and minimum parts. The equally divided part is positioned in the center of the micro graph and is arranged opposite to the center of the imaging structure, so that the micro graph and text opposite to the center of each imaging structure is divided into different equal parts, and the shape of the part of graph and text formed by diffusing the equal parts into the center can be circular, triangular, square, rectangular, trapezoidal, regular hexagonal, special-shaped and the like.

From another perspective, the micro-images 21 are arranged in an array, taking one row as an example, the row is provided with N micro-images 21, the complete micro-images are divided into N equal parts on the row, from one side to the other side of the row, each micro-image 21 is a partial image which is divided into the center by a corresponding equal part, and the N partial images are arranged on the row in sequence in a similar scanning manner, so that the integrity of the corresponding complete micro-images is ensured on the row. Similarly, it can be spread over the entire array. Therefore, the equal parts of the center of each micro-image correspond to different areas of the complete micro-image, and when the equal parts are diffused into partial images, the size is not strictly limited, and the equal parts can be set according to factors such as required magnification ratio, visual angle and the like.

In the alternative of this embodiment, the micro-image 21 includes one or more of printing image, relief image and filling image.

In order to simplify the process of manufacturing the micro-pattern layer 2, the micro-pattern 21 is preferably configured as one of a printed pattern, a relief pattern, or a filling pattern, so that the micro-pattern layer 2 can be manufactured by one manufacturing process. And the step of filling the pattern is to fill filler in the groove after the groove is stamped to form the pattern.

In an alternative provided by this embodiment, the imaging structure is one or more of a cylindrical lens, a micro lens or a fresnel lens.

When the imaging structure is a micro lens or a Fresnel lens, as the micro lens and the Fresnel lens can carry out Morer imaging on the micro pictures and texts transversely and longitudinally, the imaging structure is arranged to be in one-to-one correspondence with the micro pictures and texts, and no additional processing is needed to be carried out on the shapes of the micro pictures and texts.

When the imaging structure is a cylindrical mirror, since the cylindrical mirror can only perform moire imaging on the microimages in the radian direction of the cylindrical mirror, the microimages on one row or one column can be arranged corresponding to one cylindrical mirror, and since moire imaging cannot be performed in the row or column direction, in order to ensure the normal imaging proportion, the microimages can be adaptively adjusted in the row or column direction by 'magnifying and stretching'.

In the optional aspect of the optical imaging film provided in this embodiment, the optical imaging film further includes a substrate layer 3, and the imaging layer 1 and the micro-pattern layer 2 are respectively disposed on two sides of the substrate layer 3.

Specifically, as shown in fig. 1, it can be convenient for set up imaging layer 1 and little picture and text layer 2 to set up substrate layer 3, substrate layer 3 can be made by but not limited to the PET material, imaging layer 1 and little picture and text layer 2 can paste the seal respectively and set up in the both sides of substrate layer 3, the thickness of substrate layer 3 can carry out adaptability adjustment setting according to the focus on lens layer, make imaging layer 1 and little picture and text layer 2 set up respectively in the both sides of substrate layer 3, little picture and text layer 2 is located imaging layer 1's 0.7 ~ 1.3 times focus in can.

Of course, the base material layer 3 may not be provided, and the imaging layer 1 and the micro image-text layer 2 may be fixed at an interval or integrally formed, so that the imaging layer 1 may perform normal moire imaging on the micro image-text layer 2.

In the alternative of this embodiment, the micro-image-text layer 2 is disposed on the side of the substrate layer 3 away from the imaging layer 1 by silk-screen printing or etching.

Specifically, when the micro-image 21 is manufactured, the image can be printed by adopting the silk-screen process, and the micro-image 21 manufactured by adopting the silk-screen process has the advantages of strong color sense and better imaging effect.

Or the relief pattern is arranged by adopting an etching process, specifically, an etching layer can be coated on the substrate layer 3, then a corrosion resistant film is arranged according to the specific shape of the micro pattern 21, and finally the relief pattern with the shape consistent with that of the corrosion resistant film can be obtained in the etching layer by etching through an etching agent.

In addition, this embodiment still provides another processing preparation mode of little picture and text layer 2, and the one side that deviates from formation of image layer 1 of substrate layer 3 is provided with depressed part 31, and depressed part 31 forms little picture and text layer 2, and packs colored filler in depressed part 31.

The concave part 31 can be manufactured through the process of etching or pressing, the concave part 31 can be used as the micro-image-text layer 2 and carries out Moire imaging through the imaging layer 1, and the concave part 31 is filled with the colored filler, so that the imaging effect of the concave part 31 is better, and the color sense is stronger.

In an alternative of this embodiment, the imaging layer 1 is disposed on the side of the substrate layer 3 away from the microimage-text layer 2 by printing and curing with UV glue.

The UV glue is also called photosensitive glue and ultraviolet curing glue, is a kind of adhesive which can be cured only by ultraviolet irradiation, when the imaging layer 1 is manufactured, the UV glue can be directly printed on the substrate layer 3, and the formed imaging structure 11 can be obtained after the UV glue is buckled, pressed and formed by a mould and cured by ultraviolet irradiation, which is equivalent to directly manufacturing and fixing the imaging layer 1 on the substrate layer 3, the process is simple and convenient, and the manufacturing cost is lower.

Of course, the imaging layer 1 may be first prepared by passing it through a mold and then laminated to the base layer 3 by an adhesive.

In the alternative provided by the present embodiment, the optical imaging film further includes a reflective layer 12, and the reflective layer 12 is disposed on the side of the imaging layer 1 facing away from the substrate layer 3.

Specifically, as shown in fig. 5, the optical imaging film is reflective, and when viewed, the human eye is on the same side as the image-text layer. The reflective layer 12 may be specifically provided by a plating process.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.