TOUCH SCREEN SYSTEM AND DRIVING METHOD THEREOF

• Main Authors: LEE, JI GONG, LEE, JOO HYUNG, HIDEO YOSHIMURA, PAK, SANG JIN, HA, SANG KWON, PARK, JIN WOO
• Format: Patent
• Language: English; Korean
• Published: 27.08.2013
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CALCULATING; COMPUTING; COUNTING; CRYPTOGRAPHY; DISPLAY; EDUCATION; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SEALS

PURPOSE: A touch screen system and an operating method thereof are provided to implement precise touch by controlling a trigger signal in a host without using an active stylus having a complex structure by using a body and a finger as a signal delivery medium. CONSTITUTION: A first sensing circuit (130) receives capacitance change information sensed from first lines (112) to generate a first sensing signal. A selecting unit (140) connects the first lines with a driving circuit (120) or the first sensing circuit. A second sensing circuit (150) receives the capacitance change information sensed by sensing cells (116) from second lines (114) to generate a second sensing signal. A processing unit (160) receives the sensing signal to determine a detected touch position. An external electrode (192) is exposed to an outer surface of a touch screen panel (110) and outputs a trigger signal generated in a trigger signal generating unit (190) to the outside. [Reference numerals] (120) Driving circuit; (130) First sensing circuit; (140) Selecting unit; (150) Second sensing circuit; (160) Processing unit; (190) Trigger signal generating unit; (192) External electrode