一种放电电路、电源控制电路及放电控制方法
By using a staged discharge circuit, the power supply voltage signal terminal of the ultra-large display product is discharged in stages using discharge capacitors and discharge resistors, which solves the problem of residual charge and improves product reliability.
CN117674572BActive Publication Date: 2026-07-17BOE TECHNOLOGY GROUP CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BOE TECHNOLOGY GROUP CO LTD
- Filing Date
- 2023-12-07
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In ultra-large display products, the power-down timing may not meet the design requirements due to load conditions, resulting in the incomplete release of internal charge after power-down and causing charge residue-related defects.
Method used
A staged discharge circuit is adopted, in which charge is discharged through the first conducting sub-circuit and the discharge capacitor, and then through the second conducting sub-circuit and the discharge resistor, thereby realizing the staged discharge of the power supply voltage signal terminal.
Benefits of technology
This achieves full release of charge at the power supply voltage signal terminal, reducing product defects caused by insufficient charge release and improving product reliability.
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Figure CN117674572B_ABST
Abstract
本申请涉及显示技术领域，公开了一种放电电路、电源控制电路及放电控制方法，放电电路包括：第一导通子电路与供电电压信号端和放电电容的第一端耦接，被配置为响应于供电电压信号端的电压大于或者等于电压阈值，将供电电压信号端与放电电容连通，使供电电压信号端上的电荷通过放电电容进行泄放，放电电容的第二端接地，第二导通子电路与供电电压信号端和放电电阻的第一端耦接，被配置为响应于供电电压信号端的电压小于电压阈值，将供电电压信号端与放电电阻连通，使供电电压信号端上的电荷通过放电电阻进行泄放，放电电阻的第二端接地，上述用放电电容和放电电阻对供电电压信号端进行分阶段放电的方案，能对供电电压信号端的电荷进行充分释放。
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