Manufacturing method of microstructure
Inventors
Kim, Hong Kee • Kim, Jung Dong • Bae, Jung Hyun • Lee, Yang Gi • Park, So Hyun • Jeong, Do Hyeon
Assignees
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Publication Number
US-10231879-B2
Publication Date
2019-03-19
Expiration Date
Abstract
A manufacturing method of a microstructure includes providing a patch manufacturing sheet formed in a state in which a bottom layer is exposed on an upper part thereof; providing the patch manufacturing sheet on a first process substrate and a second process substrate; spotting a viscous composition at a plurality of positions spaced apart from each other on the bottom layer of the patch manufacturing sheet provided on only the first process substrate, or provided on both of the first process substrate and the second process substrate; contacting the patch manufacturing sheet provided on the second process substrate or the viscous composition to the viscous composition spotted on the patch manufacturing sheet provided on the first process substrate; moving relatively the second process substrate with respect to the first process substrate to stretch the viscous composition and to coagulate the stretched viscous composition; and cutting the coagulated viscous composition.
Core Innovation
The invention relates to a manufacturing method of a microstructure using a patch manufacturing sheet formed in a state in which a bottom layer or an adhesive layer is exposed. A viscous composition is spotted at a plurality of positions spaced apart from each other on the exposed bottom layer or on the exposed adhesive layer with respect to a patch manufacturing sheet provided on a first process substrate and, in some cases, on patch manufacturing sheets provided on both the first process substrate and the second process substrate.
The patch manufacturing sheet provided on the second process substrate is then contacted to the viscous composition spotted on the patch manufacturing sheet provided on the first process substrate, or the viscous composition spotted on the patch manufacturing sheet provided on the second process substrate is contacted to the viscous composition spotted on the patch manufacturing sheet provided on the first process substrate. After contacting, the first process substrate and the second process substrate are separated relatively in a vertical direction distance to stretch the viscous composition and to coagulate the stretched viscous composition.
The coagulated viscous composition is then cut, thereby forming the microstructure. For preparing the patch manufacturing sheet with the bottom layer exposed, the invention includes providing the patch manufacturing sheet including a supporting layer, an adhesive layer, and a peeling film, removing a portion of the peeling film to expose the adhesive layer, and attaching the bottom layer to the exposed adhesive layer. In an alternate configuration, the patch manufacturing sheet is provided with an exposed adhesive layer, where the adhesive configuring the adhesive layer is a hydrophilic material, and part of the peeling film is removed to expose the adhesive layer.
Claims Coverage
The document contains two independent claims. The inventive coverage is directed to a manufacturing method of a microstructure formed by spotting a viscous composition on a patch manufacturing sheet carried on first and second process substrates, contacting the sheets or compositions, stretching and coagulating the viscous composition by relative vertical separation, and cutting the coagulated viscous composition. Two inventive features distinguish the claims: exposure of a bottom layer, or exposure of a hydrophilic adhesive layer.
Patch manufacturing sheet with exposed bottom layer
Providing a patch manufacturing sheet including a supporting layer, an adhesive layer, and a peeling film, removing a portion of the peeling film to expose the adhesive layer, and attaching the bottom layer to the exposed adhesive layer, wherein the bottom layer corresponds to a size and a shape of the exposed adhesive layer.
Spotting viscous composition and stretching between substrates to coagulate
Spotting a viscous composition at a plurality of positions spaced apart from each other on the bottom layer with respect to the patch manufacturing sheet provided on the first process substrate, or on each of the bottom layers with respect to both substrates, contacting the patch manufacturing sheets or compositions, separating the first process substrate and the second process substrate in a vertical direction to stretch and coagulate the viscous composition, and cutting the coagulated viscous composition.
Patch manufacturing sheet with exposed adhesive layer and hydrophilic adhesive
Providing a patch manufacturing sheet including a supporting layer, an adhesive layer, and a peeling film, removing a portion of the peeling film to expose the adhesive layer, wherein an adhesive configuring the adhesive layer is a hydrophilic material.
Spotting viscous composition on exposed adhesive layer and stretching between substrates to coagulate
Spotting a viscous composition at a plurality of positions spaced apart from each other on the adhesive layer with respect to the patch manufacturing sheet provided on the first process substrate, or on each of the adhesive layers with respect to both substrates, contacting the patch manufacturing sheets or compositions, separating the first process substrate and the second process substrate in a vertical direction to stretch and coagulate the viscous composition, and cutting the coagulated viscous composition.
Across both independent claims, the method centers on forming a microstructure by spotting viscous composition, contacting patch manufacturing sheets or spotted compositions, stretching and coagulating the viscous composition by relative vertical separation, and cutting the coagulated composition. The independent claims differ in whether the patch manufacturing sheet exposes a bottom layer or exposes a hydrophilic adhesive layer.
Stated Advantages
Documented Applications
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