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KR-20260065639-A - Injection molding machine for manufacturing curved touch sensors

KR20260065639AKR 20260065639 AKR20260065639 AKR 20260065639AKR-20260065639-A

Abstract

An injection molding apparatus for manufacturing a curved touch sensor is disclosed, which can easily form a coating layer on the upper and lower surfaces of a curved touch sensor. The disclosed injection molding apparatus for manufacturing curved touch sensors is, It includes: an upper molding body, a cavity formed in the upper molding body, an upper injection channel connected to the cavity, and a vacuum suction connected to the cavity; an upper molding part comprising a lower molding body disposed opposite to the upper molding body, a core formed in the lower molding body, and a lower injection channel connected to the core; and a lifting part for adjusting the vertical distance between the upper molding part and the lower molding part.

Inventors

  • 김동호

Assignees

  • 주식회사 이랜텍

Dates

Publication Date
20260511
Application Date
20241030

Claims (5)

  1. An upper molding part comprising an upper molding body, a cavity formed in the upper molding body, an upper injection channel connected to the cavity, and a vacuum suction connected to the cavity; A lower molding part comprising a lower molding body positioned opposite to the upper molding body, a core formed in the lower molding body, and a lower injection channel connected to the core; A lifting unit that adjusts the vertical distance between the upper molding part and the lower molding part; An injection molding apparatus for manufacturing curved touch sensors, comprising
  2. In claim 1, An injection molding apparatus for manufacturing a curved touch sensor, wherein the cavity is formed in a concave shape corresponding to the convex curved portion of the curved touch sensor and has a volume larger than the volume of the curved touch sensor.
  3. In claim 1, An injection molding apparatus for manufacturing a curved touch sensor, wherein the upper injection channel is connected to a first coating liquid reservoir, and the first coating liquid is injected into the cavity through the upper injection channel to form a first coating layer disposed on the upper surface of the curved touch sensor.
  4. In claim 1, An injection molding apparatus for manufacturing a curved touch sensor, wherein the lower injection channel is connected to a second coating liquid reservoir, and the second coating liquid is injected into the cavity through the lower injection channel to form a second coating layer disposed on the lower part of the curved touch sensor.
  5. In claim 1, A blocking projection formed protruding downward from the lower surface of the upper molding body, and A blocking groove formed on the upper surface of the lower molding body at a position corresponding to the blocking projection, into which the blocking projection can be inserted. Injection molding apparatus for manufacturing curved touch sensors, including

Description

Injection molding machine for manufacturing curved touch sensors The present invention relates to an injection molding apparatus for manufacturing a curved touch sensor that can easily form a coating layer on the upper and lower surfaces of the curved touch sensor. A curved touch sensor is a sensor capable of detecting touch input even on curved displays or surfaces. In a curved touch sensor, a transparent conductive material and sensing electrodes are arranged on a flexible substrate, allowing it to detect touch signals even on curved surfaces. Unlike conventional flat touch sensors, curved sensors are characterized by their ability to receive input from irregular and three-dimensional surfaces, such as curved displays. Curved touch sensors enhance the design freedom of electronic devices and can provide users with an intuitive operation experience. By applying curved touch sensors to the vehicle's dashboard or center console, drivers can intuitively control the climate control system, audio, navigation, and more. In particular, a touch-based curved interface is provided, taking into account both interior design and ease of operation. Meanwhile, various functional layers can be formed on the upper and lower parts of the touch sensor to improve the performance, durability, and reliability of the touch sensor. For example, an anti-reflective coating layer is formed on the upper surface of the touch sensor to reduce light reflection, thereby improving the visibility of the touch sensor (touch screen) even in external environments. For example, an electromagnetic shielding coating layer (EMI Shielding Layer) is formed on the underside of the touch sensor to block electromagnetic interference (EMI), thereby ensuring accurate signals from the touch sensor. The present invention discloses an injection molding apparatus for manufacturing a curved touch sensor that can easily form a coating layer on the upper and lower surfaces of a curved touch sensor. FIG. 1 is a conceptual diagram illustrating an injection molding apparatus for manufacturing a curved touch sensor according to one embodiment of the present invention. FIGS. 2 and FIGS. 3 are conceptual diagrams illustrating the first operation process of an injection molding device for manufacturing a curved touch sensor according to one embodiment of the present invention. FIGS. 4 and 5 are conceptual diagrams illustrating the second operation process of an injection molding device for manufacturing a curved touch sensor according to an embodiment of the present invention. The aforementioned objectives, features, and advantages are described in detail below with reference to the attached drawings, thereby enabling those skilled in the art to easily implement the technical concept of the present invention. In describing the present invention, detailed descriptions of known technologies related to the present invention are omitted if it is determined that such descriptions would unnecessarily obscure the essence of the invention. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, the same reference numerals are used to indicate the same or similar components. Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component. In the following, the statement that any configuration is placed on the "upper (or lower)" of a component or on the "upper (or lower)" of a component may mean not only that any configuration is placed in contact with the upper (or lower) surface of said component, but also that another configuration may be interposed between said component and any configuration placed on (or below) said component. In addition, where it is stated that one component is "connected," "combined," or "connected" to another component, it should be understood that while the components may be directly connected or connected to each other, another component may be "interposed" between each component, or each component may be "connected," "combined," or "connected" through another component. Throughout the specification, unless specifically stated otherwise, each component may be singular or plural. Singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "composed of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may be omitted or additional components or steps may be included. Throughout the specification, "A and/or B" means A, B, or A and B un