New Protection Eletric Circuit Design on LTPS TFT LCD Electro-Static Discharge

• Main Authors: Cheng-huang Yu, 游政煌
• Other Authors: Sheng-Ci Zhou
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/38263416205920625548

碩士 === 元智大學 === 電機工程學系 === 96 === A new circuit design of electro static discharge (ESD) is proposed. In order to increase the ability of ESD protection, we design a diode ring in LTPS TFT LCD. LTPS TFT LCD is tested by ESD simulator and ESD current is measured by current probe. Without diode ring, the ESD simulator input voltage is 200V, a 844mA static current is obtained. With diode ring, when the static current equal to 844mA, the ESD simulator input voltage is 280V. In our new circuit design, the ESD simulator voltage has been elevated from 200V to 280V, which indicates a 40% voltage rise.