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KR-20260064961-A - Curved touch input device

KR20260064961AKR 20260064961 AKR20260064961 AKR 20260064961AKR-20260064961-A

Abstract

A curved touch input device capable of preventing visual distortion caused by light reflection is disclosed. The disclosed curved touch input device is, It includes: a touch sensor unit that detects a user's touch operation and receives a control command; a variable light-transmitting layer formed on the touch sensor unit, the light transmittance of which is adjusted according to the driving voltage; and a control module electrically connected to the touch sensor unit and the variable light-transmitting layer.

Inventors

  • 김동호

Assignees

  • 주식회사 이랜텍

Dates

Publication Date
20260508
Application Date
20241030

Claims (5)

  1. A touch sensor unit that detects user touch operations and receives control commands; A variable light-transmitting layer formed on the above-mentioned touch sensor portion, wherein the light transmittance is controlled according to the driving voltage; A control module electrically connected to the touch sensor unit and the variable light-transmitting layer; A curved touch input device including
  2. In claim 1, A curved touch input device comprising an illuminance sensor installed inside a vehicle to measure the brightness of the light inside the vehicle and transmit the measured light quantity value to the control module.
  3. In claim 1, The above variable light-transmitting layer comprises a PDLC film whose state parameters are adjusted according to the driving voltage, in a curved touch input device.
  4. In claim 3, When a driving voltage is supplied to the above PDLC film, the internal liquid crystals align in the direction of the electricity to allow light to pass through. Curved touch input device.
  5. In claim 3, The above PDLC film is a curved touch input device in which, when a driving voltage is not supplied, the internal liquid crystals are aligned in the direction of electricity to allow light to pass through.

Description

Curved touch input device The present invention relates to a curved touch input device, and more specifically, to a curved touch input device capable of preventing visual distortion caused by light reflection. 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. However, the varying angles of light reflection on curved surfaces can affect screen visibility, and visual distortion may occur due to light reflection, particularly when a display and a touch panel are combined. This can lead to problems such as erroneous operation by reducing visibility and accuracy during the use of the touch interface. FIG. 1 is a conceptual diagram illustrating a curved touch input device according to one embodiment of the present invention. FIG. 2 is a cross-sectional view showing a touch sensor part of a curved touch input device according to one embodiment of the present invention. FIG. 3 is a drawing for explaining an electrode pattern provided in a curved touch input device according to one embodiment of the present invention. Figure 4 is an example diagram illustrating the operating principle of a variable light-transmitting layer. 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 unless specifically stated otherwise, and "C to D" means C or more and D or less, unless specifically stated otherwise. Hereinafter, a curved touch input device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram illustrating a curved touch input device according to one embodiment of the present invention. Referring to FIG. 1, a curved touch input device according to one embodiment of the present invention includes a touch sensor unit (100), a variable light-transmitting layer (300), and a control module (40