Ceramic dielectric variable capacitor and preparation method thereof

• Main Authors: LEI WUHANG, LIANG HONGWEI, ZHAO XIANGNAN, ZOU HUIQING, JIANG XIAOMING, XU PENG, HAN JIANHONG, ZHANG XINGANG, QIU HONGSONG
• Format: Patent
• Language: Chinese; English
• Published: 15.07.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; DRESSING OR CONDITIONING OF ABRADING SURFACES; ELECTRICITY; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS; GRINDING; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; PERFORMING OPERATIONS; POLISHING; TRANSPORTING

The invention discloses a ceramic dielectric variable capacitor and a preparation method thereof. The ceramic dielectric variable capacitor comprises conductive rubber with a fixed electrode dielectric ceramic body and a variable electrode, the dielectric ceramic body is of a cylindrical structure, and conductive rubber of the variable electrode is of a semi-spherical cylindrical structure, and the diameter of the conductive rubber is equivalent to that of a fixed electrode of the ceramic body. The ceramic dielectric variable capacitor is applied to an active capacitance pen for touch screen writing, the capacitance of the ceramic dielectric variable capacitor changes along with the change of writing force in the writing process of the capacitance pen, and the writing effect of an actual pen is achieved. 本发明公开了本发明提供了一种瓷介可变电容器及其制备方法，包括具有固定电极介质陶瓷体和可变电极的导电橡胶；介质陶瓷体为圆柱形结构，其可变电极的导电橡胶为半圆球状圆柱形结构直径与陶瓷体固定电极相当。本发明应用于触摸屏书写用主动式电容笔，电容笔在书写过程中本发明瓷介可变电容器的电容量随书写力度变化而变化，达到实际笔的书写效果。