TWM602496U - Brightness enhancement film transfer printing roller and prism microstructure transfer printing layer thereof - Google Patents

Abstract

This creation discloses a brightness enhancement film transfer roller. The brightness-enhancing film transfer roller includes a light-transmitting round tube and a microstructure transfer layer formed on an outer surface of the light-transmitting round tube. The transparent round tube defines a central axis. The microstructure transfer layer is formed by exposing a negative photoresist layer, and the microstructure transfer layer is used to roll and transfer a plurality of microstructures on a transparent film. The microstructure transfer layer includes a plurality of elongated structures each parallel to the central axis and arranged in an annular shape, and the cross sections of any two adjacent elongated structures perpendicular to the central axis have different shapes.

Description

Brightening film transfer roller and its microstructure transfer layer

This creation relates to a transfer roller, in particular to a brightness-enhancing film transfer roller and its microstructure transfer layer.

The existing brightness enhancement film transfer rollers usually use diamond carving knife technology to form complex microstructures on their surface. However, if a complex microstructure is to be formed on the surface of the brightness enhancement film transfer roller, a lot of design time and manufacturing costs are often required.

Therefore, how to overcome the above-mentioned shortcomings by providing a brightness enhancement film transfer roller and its microstructure transfer layer has become one of the important issues to be solved by this business.

In view of the shortcomings of the prior art, this creative embodiment provides a brightness enhancement film transfer roller and its microstructure transfer layer, which can effectively improve the defects that may occur in the existing brightness enhancement film transfer roller and its surface microstructure.

This creative embodiment discloses a brightness enhancement film transfer roller, which includes: a light-transmitting circular tube defining a central axis; and a microstructure transfer layer formed by exposing a negative photoresist layer, and The microstructure transfer layer is formed on an outer surface of the light-transmitting tube for rolling and transferring on a light-transmitting film to form a plurality of microstructures; wherein the microstructure transfer The printing layer includes a plurality of elongated structures each parallel to the central axis and arranged in an annular shape, and the cross-sections of any two adjacent elongated structures perpendicular to the central axis have different shapes .

The embodiment of the present invention discloses a transfer layer of the microstructure of a light-enhancing film transfer roller, which is formed by exposing a negative photoresist layer to roll and transfer a light-transmitting film to form a plurality of microstructures Wherein, the microstructure transfer layer of 稜鏡 includes a plurality of elongated structures that are parallel to each other and arranged in an annular shape, and the cross-sections of any two adjacent elongated structures are perpendicular to the long axis direction Have different shapes.

One of the beneficial effects of this creation is that the brightness enhancement film transfer roller and its microstructure transfer layer provided by this creation can be exposed to the light-transmitting tube by "exposing the negative photoresist layer" The technical solutions of "the outer surface forming the microstructure transfer layer" and "the cross-sections of any two adjacent elongated structures of the microstructure transfer layer have different shapes", effectively saving The manufacturing cost and manufacturing time for manufacturing the brightness enhancement film transfer roller with a complex surface microstructure.

In order to have a better understanding of the features and technical content of this creation, please refer to the following detailed descriptions and drawings about this creation. However, the provided drawings are only for reference and explanation, not to limit this creation.

The following is a specific embodiment to illustrate the implementation of the "brightening film transfer roller and its microstructure transfer layer" disclosed in this creation. Those skilled in the art can understand this creation from the content disclosed in this specification. The advantages and effects. This creation can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this creation. In addition, the drawings in this creation are merely schematic illustrations, and are not depicted in actual size, and are stated in advance. The following embodiments will further describe the related technical content of this creation in detail, but the disclosed content is not intended to limit the protection scope of this creation.

It should be understood that although terms such as “first”, “second”, and “third” may be used herein to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are mainly used to distinguish one element from another, or one signal from another signal. In addition, the term "or" used in this document may include any one or a combination of more of the associated listed items depending on the actual situation.

Please refer to Figures 1 to 8B, which are the creative embodiments. It should be noted that the drawings corresponding to this embodiment and the related numbers and shapes mentioned in this embodiment are only used for specific description. The implementation of this creation is to facilitate understanding of the content of this creation, not to limit the scope of protection of this creation.

The invention embodiment discloses a brightness enhancement film 500 and a transfer type manufacturing method of the brightness enhancement film. To facilitate the understanding of the structure of the brightness enhancement film 500, the following will first introduce the transfer type manufacturing method of the brightness enhancement film, and then describe the structure of the brightness enhancement film 500, but the brightness enhancement film of this embodiment 500 is not limited to being made according to this manufacturing method. As shown in FIG. 1, the transfer manufacturing method of the brightness enhancement film includes a roller manufacturing step S1 and a brightness enhancement film transfer step S2 in this embodiment.

The manufacturing process of the roller manufacturing step S1 includes the following steps in sequence: a coating step S11, a light shape step S12, an exposure step S13, and a developing step S14, but the invention is not limited to this. For example, in other embodiments not shown in this creation, the roller manufacturing step S1 may further include a baking step connected to the developing step S14.

As shown in FIGS. 1 and 2, the coating step S11 is to provide a light-transmitting round tube 1, and coating a negative photoresist layer 2 around 360 degrees on the outer surface 12 of the light-transmitting tube 1. It should be noted that, in this embodiment, the light-transmitting circular tube 1 defines a central axis 11, and the light-transmitting circular tube 1 is made of soda lime glass, quartz glass or acrylic glass and other materials with transparent properties. The negative photoresist layer 2 is mainly made of materials such as polyisoprene rubber (Polyisoprene rubber) or epoxy-based polymer (Epoxy-based polymer), but the creation is not limited to this. For example, the light-transmitting round tube 1 can also be made of other transparent materials such as Pyrex glass; the negative photoresist layer 2 can also be made of Thiol-enes (OSTE ) Polymer) and other negative photoresist materials.

As shown in FIGS. 1 and 3, the light shape step S12: provide a light source 200 and a light cover 300 surrounding the light source 200 at intervals, and then the light source 200 is combined with the light cover 300 to extend into Inside the light-transmitting round tube 1, so that the light emitted by the light source 200 can pass through the mask 300, and pass through the light-transmitting round tube 1 in a predetermined light shape and irradiate the negative light. Resistance layer 2. Wherein, the light source 200 in this embodiment can be used to emit ultraviolet light, and preferably includes at least one light emitting diode chip capable of emitting between 340 nanometers (nm) and 410 nanometers, and at least One type of the light-emitting diode chip includes a laser diode chip, but the type of at least one light-emitting diode chip can be adjusted and changed according to design requirements, and this creation is not limited to this.

As shown in FIG. 3, the photomask 300 is a grayscale photomask in this embodiment, and the grayscale values of the photomask 300 are gradually distributed. Furthermore, the gray scales of the mask 300 have obvious boundaries. The mask 300 can control the predetermined light shape by adjusting its grayscale value distribution, but the creation is not limited to this. For example, the grayscale values of the mask 300 may also be continuously and progressively distributed. In other words, there is no obvious boundary between the gray scales of the photomask 300.

As shown in FIGS. 1, 3, and 4, the exposure step S13: Rotate the light source 200 and the mask 300 relative to the light-transmitting tube 1 so as to be adjacent to the light-transmitting tube 1 A part of the negative photoresist layer 2 of the outer surface 12 can be irradiated with the light having the predetermined light shape to form a microstructure transfer layer 3. Wherein, the transparent circular tube 1 rotates along the central axis 11, and when the transparent circular tube 1 rotates, the light source 200 and the mask 300 move from one end of the transparent circular tube 1 To the other end.

It should be noted that, as shown in FIGS. 5A and 7A, in a cross section of the microstructure transfer layer 3 perpendicular to the central axis 11, the microstructure transfer layer 3 is in a closed shape. Moreover, the microstructure transfer layer 3 has a plurality of elongated structures 31 parallel to each other and connected in sequence. Wherein, each of the elongated structures 31 extends from one end to the other end of the light-transmitting circular tube 1, and any two adjacent elongated structures 31 have the same height, but this creation does not Limited to this. For example, as shown in FIG. 5B and FIG. 7B, any two adjacent elongated structures 31 may also have different heights; as shown in FIG. 7C and FIG. 7D, each of the elongated structures 31 The structure 31 may also surround the light-transmitting circular tube 1, and any two adjacent elongated structures 31 may have the same height, but the creation is not limited to this. For example, in other embodiments not shown in the present creation, any two adjacent elongated structures 31 may also have different heights.

It should be noted that, as shown in FIGS. 5A and 5B, the widths of the cross sections perpendicular to the long axis direction of any two adjacent elongated structures 31 are different, but the present creation is not limited to this. For example, in other embodiments not shown in the present creation, the width of the cross section perpendicular to the long axis direction of any two adjacent elongated structures 31 may be the same.

It should be noted that, as shown in FIGS. 7A to 7D, each of the elongated structures 31 is parallel to the central axis 11, and the longitudinal direction of any two adjacent elongated structures 31 is perpendicular to its longitudinal axis. The section has different shapes. In more detail, in this embodiment, the cross-sections perpendicular to the long axis direction of any two adjacent elongated structures 31 have different triangles, but the present creation is not limited to this. For example, in other embodiments not shown in the present creation, the cross-sections perpendicular to the long axis direction of any two adjacent elongated structures 31 may also have a semicircle or a triangle.

It should be noted that the shape of any one of the elongated structures 31 is different corresponding to the grayscale value of the part of the photomask 300. Wherein, the part of the photomask 300 can be defined as a color block 301. Furthermore, the user can control the predetermined light shape by adjusting the grayscale value distribution of each color block 301, and then adjust the shape of the corresponding elongated structure 31. As shown in FIG. 5A and FIG. 5B, when the grayscale value distribution of each color block 301 is different, the microstructure transfer layer 3 correspondingly forms a variety of long strip structures 31 with different shapes.

For example, as shown in FIG. 6A, when the gray scale value of each color block 301 is roughly distributed in a deep-light-dark gradation, the negative photoresist illuminated by the predetermined light shape The part of layer 2 forms an isosceles triangle structure. As shown in FIG. 6B, when the gray scale value of a partial section of each color block 301 changes sharply, the portion of the negative photoresist layer 2 irradiated with the predetermined light shape forms an asymmetry Triangle structure.

As shown in FIG. 6C and FIG. 6D, when the grayscale value of each color block 301 is approximately a continuous and progressive distribution of deep-light-deep, the negative photoresist layer irradiated with the predetermined light shape The part of 2 forms a semicircular structure. When the gray scale value of each color block 301 is continuously and gradually distributed from light to dark, the portion of the negative photoresist layer 2 irradiated with the predetermined light shape forms a right-angled triangle structure.

As shown in Figure 1, Figure 7A and Figure 7B, the development step S14: remove another part of the negative photoresist layer 2 where the microstructure transfer layer 3 is not formed, so as to make the light transparent The round tube 1 and the microstructure transfer layer 3 formed on the light-transmitting round tube 1 together constitute a brightness enhancement film transfer roller 100. In this embodiment, a developer corresponding to the negative photoresist layer 2 can be used to dissolve another part of the negative photoresist layer 2 where the microstructure transfer layer 3 is not formed (that is, , The part of the negative photoresist layer 2) that is not irradiated by the light having the predetermined light shape.

As shown in FIG. 1 and FIG. 8A, the brightness enhancement film transfer step S2: the brightness enhancement film transfer roller 100 is continuously rolled on a light transmission film 400 to make the light transmission film 400 A plurality of microstructures 501 are formed to form a brightness enhancement film 500. The above is the description of the transfer type manufacturing method of the brightness enhancement film of this embodiment, and the structure of the brightness enhancement film 500 in this embodiment will be described below, but the present creation is not limited to this.

As shown in FIG. 8A, the scalloped microstructure 501 of the brightness enhancement film 500 is continuously rolled on the light-transmitting film by a plurality of elongated structures 31 of the brightness enhancement film transfer roller 100 400 is formed, and the microstructures 501 are connected in sequence without interruption. Wherein, the number of the plurality of striped microstructures 501 of the brightness enhancement film 500 is greater than the number of the strips 31 of the striped microstructure transfer layer 3. It should be noted that, in this embodiment, any two adjacent elongated structures 31 have the same height, so that any two adjacent 稜鏡 microstructures 501 have the same height, but This creation is not limited to this. For example, as shown in FIG. 8B, any two adjacent strip-shaped structures 31 have different heights, so that any two adjacent strip-shaped microstructures 501 have different heights.

In addition, as shown in FIG. 7B and FIG. 8B, the present creative embodiment also discloses a brightness enhancement film transfer roller 100, which includes the light-transmitting circular tube 1 and the light-transmitting circular tube in order from the inside to the outside. 1 of the outer surface 12 of the microstructure transfer layer 3 of 稜鏡. The transparent round tube 1 defines the central axis 11. The microstructure transfer layer 3 is formed by exposing the negative photoresist layer 2, and the microstructure transfer layer 3 is used to roll and transfer on the transparent film 400 to form a plurality of The microstructures 501 described above constitute the brightness enhancement film 500. Wherein, the microstructure transfer layer 3 includes a plurality of the elongated structures 31 each parallel to the central axis 11 and arranged in an annular shape, and any two of the elongated structures 31 perpendicular to the central axis 11 The cross-sections of two adjacent elongated structures 31 have different shapes, but the present creation is not limited to this. For example, as shown in FIG. 7C and FIG. 7D, the microstructure transfer layer 3 can also include a plurality of the elongated structures 31 each perpendicular to the central axis 11.

In addition, as shown in FIG. 8B, this creative embodiment also discloses a microstructure transfer layer 3 of a brightness enhancement film transfer roller 100, which is formed by exposing the negative photoresist layer 2 for use in the The light-transmitting film 400 rolls and transfers to form a plurality of 稜鏡 microstructures 501 to form the brightness enhancement film 500; wherein the 稜鏡 microstructure transfer layer 3 includes multi-layers arranged parallel to each other and arranged in an annular shape. There are two elongated structures 31, and the cross-sections of any two adjacent elongated structures 31 perpendicular to their long axis directions have different shapes, but the present creation is not limited to this. For example, as shown in FIG. 7C and FIG. 7D, the microstructure transfer layer 3 can also include a plurality of the elongated structures 31 each perpendicular to the central axis 11.

[Beneficial effects of the embodiment]

One of the beneficial effects of this creation is that the brightness enhancement film transfer roller and its microstructure transfer layer provided by this creation can be exposed to the light-transmitting tube by "exposing the negative photoresist layer" The technical solutions of "the outer surface forming the microstructure transfer layer" and "the cross-sections of any two adjacent elongated structures of the microstructure transfer layer have different shapes", effectively saving The manufacturing cost and manufacturing time for manufacturing the brightness enhancement film transfer roller with a complex surface microstructure.

The content disclosed above is only a preferred and feasible embodiment of the creation, and does not limit the scope of the patent application for this creation. Therefore, all equivalent technical changes made using the creation specification and schematic content are included in the application for this creation. Within the scope of the patent.

100: Brightening film transfer roller 1: Translucent round tube 11: Central axis 12: Outer surface 2: Negative photoresist layer 3: 稜鏡 microstructure transfer layer 31: Long strip structure 200: light source 300: Mask 301: color block 400: Translucent film 500: Brightening film 501: 稜鏡 Microstructure S1: Roller manufacturing steps S11: coating step S12: Light Shape Step S13: Exposure step S14: Development step S2: Brightening film transfer step

FIG. 1 is a schematic diagram of the step flow of the transfer type manufacturing method of the brightness enhancement film of the creative embodiment.

Fig. 2 is a three-dimensional schematic diagram of a light-transmitting round tube coated with a negative photoresist layer according to the creative embodiment.

FIG. 3 is a schematic diagram of the action of the light source and the light shield jointly extending into the light-transmitting circular tube of the creative embodiment.

FIG. 4 is a three-dimensional schematic diagram of the light-transmitting circular tube illuminated by a predetermined light shape according to the creative embodiment.

5A to 5B are schematic cross-sectional views taken along the line VA-VA in FIG. 4.

6A to 6D are schematic cross-sectional views of the elongated structure of the creative embodiment.

7A to 7C are three-dimensional schematic diagrams of the brightness enhancement film transfer roller of the creative embodiment.

Fig. 7D is a schematic cross-sectional view of Fig. 7C along the line VIID.

8A to 8B are schematic diagrams of the movement of embossing the light-transmitting film with the brightness enhancement film transfer roller of the creative embodiment.

100: Brightening film transfer roller

1: Translucent round tube

11: Central axis

12: Outer surface

3: 稜鏡 microstructure transfer layer

31: Long strip structure

Claims (10)

A brightness enhancement film transfer roller, which includes: A light-transmitting round tube, which defines a central axis; and A microstructure transfer layer is formed by exposing a negative photoresist layer, and the microstructure transfer layer is formed on an outer surface of the light-transmitting tube for use in a light-transmitting film Rolling up transfer to form multiple microstructures; Wherein, the microstructure transfer layer includes a plurality of elongated structures each parallel to the central axis and arranged in a ring shape, and any two adjacent long structures perpendicular to the central axis The cross section of the strip structure has different shapes. The brightness enhancement film transfer roller according to claim 1, wherein any two adjacent elongated structures have different heights. The brightness enhancement film transfer roller according to claim 1, wherein the cross-sections of any two adjacent elongated structures perpendicular to the central axis are different triangles. The brightness enhancement film transfer roller according to claim 1, wherein, in a section of the microstructure transfer layer perpendicular to the central axis, the microstructure transfer layer is closed. The brightness enhancement film transfer roller according to claim 1, wherein a plurality of the elongated structures are connected in sequence without interruption. The brightness enhancement film transfer roller according to claim 1, wherein the light-transmitting round tube is transparent. A brightening film transfer roller microstructure transfer layer formed by exposing a negative photoresist layer for rolling and transferring on a light-transmitting film to form a plurality of microstructures; wherein, the The microstructure transfer layer includes a plurality of elongated structures that are parallel to each other and arranged in an annular shape, and the cross-sections of any two adjacent elongated structures perpendicular to the longitudinal direction of the elongated structures have different shapes. The microstructure transfer layer of the brightness enhancement film transfer roller according to claim 7, wherein any two adjacent elongated structures have different heights. The microstructure transfer layer of the brightness enhancement film transfer roller according to claim 7, wherein the cross-sections of any two adjacent elongated structures are different triangles. The microstructure transfer layer of the brightness enhancement film transfer roller according to claim 7, wherein a plurality of the strip-shaped structures are continuously connected in sequence.

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