驱动电路单元、面板驱动电路和显示装置

By introducing an input switching transistor, an output transistor, a control transistor, and a clock overcurrent protection unit into the drive circuit unit, the problem of display panel burnout caused by short circuit between clock signals is solved, achieving overcurrent protection and cost reduction.

CN118430473BActive Publication Date: 2026-07-17SHENZHEN SKYWORTH INT TRADE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN SKYWORTH INT TRADE CO LTD
Filing Date
2024-05-10
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, there is a problem of display panels burning out due to short circuits between clock signals.

Method used

By introducing an input switching transistor, an output transistor, a control transistor, and a clock overcurrent protection unit into the drive circuit unit, control and overcurrent protection of the gate drive signal are achieved. This includes a detection subunit and a protection subunit, ensuring that when the current value is above a preset threshold, an overcurrent detection signal is fed back to trigger the main control module to disconnect the motherboard power supply.

Benefits of technology

It effectively prevents the display panel from burning out due to short circuits between clock signals, ensures normal display in the display area, and reduces the cost of the drive circuit by integrating a single capacitor.

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Abstract

本申请涉及一种驱动电路单元、面板驱动电路和显示装置,包括:输入开关晶体管、输出晶体管、控制晶体管和时钟过流保护单元,通过输入开关晶体管在第一输入信号端的控制下,将第一输入信号端输出的第一输入信号传输给控制节点,并通过控制晶体管在第二输入信号端的控制下,将第三输入信号端提供的栅关闭信号传输给控制节点,使得输出晶体管可以在控制节点的控制下,基于时钟信号端提供的时钟信号输出栅极驱动信号,且通过时钟过流保护单元在栅极驱动信号的电流值大于预设电流阈值时,向主控模块反馈过流检测信号,以触发主控模块断开主板供电,实现过流保护,从而解决了现有相关技术中因时钟信号间的电路短路所带来的显示面板烧坏的问题。
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