TOUCH INPUT DEVICE INCLUDING DISPLAY MODULE HAVING PRESSURE ELECTRODE FORMED THEREIN, AND PRESSURE ELECTRODE FORMING METHOD

• Main Authors: KIM TAEHWAN, YOON SANGSIC
• Format: Patent
• Language: English; Japanese
• Published: 07.06.2018
• Subjects: ADVERTISING; BASIC ELECTRIC ELEMENTS; CALCULATING; COMPUTING; COUNTING; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; DISPLAYING; EDUCATION; ELECTRIC DIGITAL DATA PROCESSING; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; LABELS OR NAME-PLATES; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; SEMICONDUCTOR DEVICES; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TESTING

PROBLEM TO BE SOLVED: To provide a touch input device capable of detecting a touch pressure.SOLUTION: The touch input device according to an embodiment of the present invention includes a display module in which a pressure electrode for detecting pressure is formed on a lower surface, and a reference potential layer formed apart from the pressure electrode, and detects a touch pressure based on the amount of a change in electrostatic capacitance due to a change in the distance between the pressure electrode and the reference potential layer. Accordingly, the touch input device can be made thinner, which can also reduce the manufacturing cost, and can detect the touch position and the touch pressure without impairing the visibility and the light transmittance of the display module.SELECTED DRAWING: Figure 6b 【課題】タッチ圧力検出が可能なタッチ入力装置を提供する。【解決手段】本発明の実施形態によるタッチ入力装置は、下部面に圧力検出のための圧力電極が形成されたディスプレイモジュール及び前記圧力電極と離隔して形成された基準電位層を含み、圧力電極と基準電位層との間の距離の変化による静電容量の変化量に基づいてタッチ圧力を検出する。これによって、さらに薄い厚さを有して、製造コストまで減らすことができ、ディスプレイモジュールの視認性（ｖｉｓｉｂｉｌｉｔｙ）及び光透過率を低下させずに、タッチ位置とタッチ圧力を検出できるようになる。【選択図】 図６ｂ