KR-20260067404-A - Method for making a reflective wave guide

KR20260067404AKR 20260067404 AKR20260067404 AKR 20260067404AKR-20260067404-A

Abstract

The present invention provides a method for manufacturing a reflective waveguide that controls light reflection, comprising: a first mold manufacturing step of manufacturing a first mold having an intaglio first reflective pattern designed on one surface; a first top plate manufacturing step of manufacturing a first top plate having an embossed second reflective pattern formed on one surface by filling and curing a UV-curable or thermosetting silicone resin on the first reflective pattern and then releasing it, thereby manufacturing a first top plate having a raised second reflective pattern corresponding to the first reflective pattern formed on one surface; a first reflective layer forming step of forming a first reflective layer by depositing a metal material on the second reflective pattern; and a first bottom plate forming step of forming a first bottom plate laminated with the first top plate by applying and curing a UV-curable or thermosetting silicone resin on the first reflective layer.

Inventors

류한욱
김석진

Assignees

희성전자 주식회사

Dates

Publication Date: 20260513
Application Date: 20241104

Claims (18)

In a method for manufacturing a reflective waveguide that controls light reflection, A first mold manufacturing step of manufacturing a first mold having an intaglio first reflection pattern designed on one surface; A first top plate manufacturing step of producing a first top plate having a raised second reflection pattern corresponding to the first reflection pattern formed on one surface by filling and curing a UV-curable or thermo-curable silicone resin on the first reflection pattern and then releasing it; A first reflection layer formation step of forming a first reflection layer by depositing a metal material on the second reflection pattern above; and A method for manufacturing a reflective wave guide, comprising a step of forming a first bottom plate by applying a UV-curable or thermo-curable silicone resin onto the first reflective layer and then curing it to form a first bottom plate laminated with the first top plate.
In claim 1, A method for manufacturing a reflective wave guide, wherein the first reflection pattern and the second reflection pattern are characterized by a plurality of first individual patterns and second individual patterns having a triangular shape being connected adjacently.
In claim 1, A method for manufacturing a reflective wave guide, characterized in that the first mold is made of one material selected from metal, reinforced glass, and quartz.
In claim 1, The first reflective layer formation step is, The above metal material is deposited on the second reflection pattern using a half-mirror method, and A method for manufacturing a reflective wave guide, characterized in that the surface roughness of the second reflection pattern is 20 nm or less.
In a method for manufacturing a reflective waveguide that controls light reflection, A second mold manufacturing step for manufacturing a second mold having a third embossed reflection pattern designed on one surface; A second top plate manufacturing step of producing a second top plate having an intaglio fourth reflection pattern corresponding to the third reflection pattern formed on one surface by filling and curing a UV-curing or thermosetting silicone resin on the third reflection pattern and then releasing it; A second reflection layer formation step of forming a second reflection layer by depositing a metal material on the fourth reflection pattern above to form a second reflection layer; and A method for manufacturing a reflective wave guide, comprising a second bottom plate lamination step of laminating a second bottom plate made of UV-curing or thermo-curing silicone resin to the lower part of the second top plate.
In claim 5, A method for manufacturing a reflective wave guide, wherein the third reflection pattern and the fourth reflection pattern are characterized by a plurality of third individual patterns and fourth individual patterns having a triangular shape being connected adjacently.
In claim 5, A method for manufacturing a reflective wave guide, characterized in that the second mold is made of one material selected from metal, reinforced glass, and quartz.
In claim 5, The second reflective layer formation step is, The above metal material is deposited on the above fourth reflection pattern using a half-mirror method, and A method for manufacturing a reflective wave guide, characterized in that the surface roughness of the fourth reflection pattern is 20 nm or less.
In claim 5, The above second bottom plate lamination step is, A method for manufacturing a reflective wave guide, characterized by heat-bonding the second lower plate, which has a flat shape, to the lower part of the second upper plate.
In claim 5, The above second bottom plate lamination step is, A method for manufacturing a reflective wave guide, characterized by applying a UV-curable or thermo-curable silicone resin onto the second reflective layer and then curing it.
In a method for manufacturing a reflective waveguide that controls light reflection, A third bottom plate manufacturing step of manufacturing a third bottom plate having an intaglio fifth reflection pattern formed on one surface; A third reflection layer formation step of forming a third reflection layer by depositing a metal material on the above fifth reflection pattern; and A method for manufacturing a reflective wave guide, comprising a third top plate lamination step of laminating a third top plate made of UV-curing or thermo-curing silicone resin onto the upper portion of the third bottom plate.
In claim 11, The third lower plate is made of glass, and the fifth reflection pattern is formed on one surface of the third lower plate by etching, and A method for manufacturing a reflective wave guide, wherein the above-mentioned fifth reflection pattern is characterized by a plurality of fifth individual patterns having a triangular shape being connected adjacently.
In claim 11, The third reflection layer formation step is, The above metal material is deposited on the fifth reflection pattern using a half-mirror method, and A method for manufacturing a reflective wave guide, characterized in that the surface roughness of the fifth reflection pattern is 20 nm or less.
In claim 11, The above third top plate lamination step is, A method for manufacturing a reflective wave guide characterized by heat-bonding the third upper plate, which has a flat shape, to the upper part of the third lower plate.
In claim 11, The above third top plate lamination step is, A method for manufacturing a reflective wave guide, characterized by applying a UV-curable or thermo-curable silicone resin onto the third reflective layer and then curing it.
In a method for manufacturing a reflective waveguide that controls light reflection, A fourth bottom plate manufacturing step of manufacturing a fourth bottom plate having a sixth embossed reflection pattern formed on one surface; A fourth reflection layer formation step of forming a fourth reflection layer by depositing a metal material on the sixth reflection pattern above to form a fourth reflection layer; and A method for manufacturing a reflective wave guide, comprising a step of forming a fourth upper plate by applying a UV-curing or thermo-curing silicone resin onto the fourth reflective layer and then curing it to form a fourth upper plate laminated with the fourth lower plate.
In claim 16, The above-mentioned fourth lower plate is made of glass material, and the above-mentioned sixth reflection pattern is formed on one surface of the above-mentioned fourth lower plate by etching, and A method for manufacturing a reflective wave guide, wherein the above-mentioned sixth reflection pattern is characterized by a plurality of sixth individual patterns having a triangular shape being connected adjacently.
In claim 16, The fourth reflection layer formation step is, The above metal material is deposited on the above 6th reflection pattern using a half-mirror method, and A method for manufacturing a reflective wave guide, characterized in that the surface roughness of the sixth reflection pattern is 20 nm or less.

Description

Method for making a reflective wave guide The present invention relates to a method for manufacturing a reflective wave guide, and more specifically, to a method for manufacturing a reflective wave guide that controls the reflection of light. Referring to the background technology described in Korean Patent Publication No. 10-2024-0011891, modern computing and display technologies have facilitated the development of systems for so-called 'virtual reality' or 'augmented reality' experiences, wherein digitally reproduced images or parts of images are presented to the user in a manner that makes them appear real or can be perceived as real. The aforementioned virtual reality, or "VR" scenario typically involves the presentation of digital or virtual image information without transparency to other real-world visual inputs. Additionally, the aforementioned augmented reality, or "AR" scenario typically involves the presentation of digital or virtual image information as an augmentation to the visualization of the real world surrounding the user. The equipment for operating the above-mentioned virtual reality or augmented reality is equipped with a wave guide that controls light reflection. However, there is a problem in that the manufacturing cost of such wave guides increases and mass production is difficult due to the complex manufacturing process and the requirement for precision. FIG. 1 is a flowchart illustrating the sequence of a method for manufacturing a reflective wave guide according to a first embodiment of the present invention. Figure 2 is a diagram sequentially illustrating the process of manufacturing a reflective wave guide according to the flowchart shown in Figure 1. FIG. 3 is a flowchart illustrating the sequence of a method for manufacturing a reflective wave guide according to a second embodiment of the present invention. FIG. 4 is a drawing that sequentially illustrates the process of manufacturing a reflective wave guide according to the flowchart shown in FIG. 3 and laminating the second lower plate to the second upper plate by heat bonding. FIG. 5 is a drawing that sequentially illustrates the process of a reflective wave guide being manufactured according to the flowchart shown in FIG. 3 and a second lower plate being formed on the lower part of the second upper plate by curing. FIG. 6 is a flowchart illustrating the sequence of a method for manufacturing a reflective wave guide according to a third embodiment of the present invention. FIG. 7 is a drawing that sequentially illustrates the process of manufacturing a reflective wave guide according to the flowchart shown in FIG. 6 and laminating a third upper plate to a third lower plate by heat bonding. FIG. 8 is a drawing that sequentially illustrates the process of a reflective wave guide being manufactured according to the flowchart shown in FIG. 6 and a third upper plate being formed on the upper part of a third lower plate by curing. FIG. 9 is a flowchart illustrating the sequence of a method for manufacturing a reflective wave guide according to the fourth embodiment of the present invention. FIG. 10 is a diagram sequentially illustrating the process of manufacturing a reflective wave guide according to the flowchart shown in FIG. 9. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Referring to FIGS. 1 and 2, a method for manufacturing a reflective wave guide according to a first embodiment of the present invention is for manufacturing a reflective wave guide (100) that controls the reflection of light, and includes a first mold manufacturing step (S110), a first upper plate manufacturing step (S120), a first reflective layer forming step (S130), and a first lower plate forming step (S140). The first mold manufacturing step (S110) is a step of manufacturing a first mold (110) having a first reflective pattern (111) engraved on one surface, and the first mold (110) is made of one material selected from metal, reinforced glass, and quartz, and the first reflective pattern (111) is preferably formed on one surface of the first mold (110) by etching. The first reflection pattern (111) is formed by connecting a plurality of first individual patterns (111a) having a triangular shape adjacently, and although it is described that the first reflection pattern (111) is formed by etching, it is not limited thereto, and the first reflection pattern (111) may also be formed on one surface of the first mold (110) using an injection molding method. After the first mold manufa