INTEGRATED GATE DRIVE CIRCUIT AND DISPLAY PANEL COMPRISING INTEGRATED GATE DRIVE CIRCUIT

• Main Authors: LEE, CHANGYEH, ZENG, LIMEI, ZHANG, SHENGDONG, HU, ZHIJIN, LIAO, CONGWEI
• Format: Patent
• Language: Chinese; English; French
• Published: 23.07.2015
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CRYPTOGRAPHY; DISPLAY; EDUCATION; PHYSICS; SEALS

An integrated gate drive circuit and a display panel comprising the integrated gate drive circuit. The drive circuit comprises multiple levels of gate drive units that are cascaded and multiple levels of additional gate drive units, wherein the gate drive unit of level n comprises a drive unit (42) and a pull-down unit (44), and the additional gate drive unit of level m comprises an additional drive unit (52) and an additional pull-down unit (54). The integrated gate drive circuit uses a dual-pull-down structure, enables a thin film transistor in the pull-down unit and the additional pull-down unit in the circuit to be located in a working environment with a bipolar voltage offset, effectively suppresses a threshold voltage drift of the thin film transistor in the pull-down unit and the additional pull-down unit, prolongs service lift of the circuit, and enables the circuit to better meet requirements of large- and medium-sized display panels. In addition, the circuit has a simple structure and low power cons