Driver Circuit Short-Circuit Protection Module
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Solution Overview
Problem
Existing display devices face damage and poor display effects due to short-circuits in light-emitting modules, which continuous high currents cause in the driver circuit, leading to element damage and impaired performance.
Innovation Solution
A driver circuit with a terminal connection module, a drive module, and a short-circuit protection module is designed, where the short-circuit protection module is connected in series between the terminal connection module and the power supply terminals, disconnecting in case of a short-circuit to prevent damage and allowing for easy detection of faulty units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light-emitting module operates without short-circuit protection, then the display device can maintain continuous operation, but the driver circuit elements will be damaged by continuous high current
Solution Approach 1:
The patent applies preliminary action by pre-configuring the short-circuit protection module in series with the light-emitting module before a short-circuit fault occurs. The protection module includes protection elements that are positioned and ready to function, allowing the system to automatically respond to short-circuit conditions without requiring complex real-time monitoring or control logic. This preventive configuration enables the driver circuit to maintain reliability while avoiding the complexity of active detection and response systems.
2Reliability
If a short-circuit protection module is added to the driver circuit, then damage to driver circuit elements is prevented, but the device complexity increases
Solution Approach 1:
The patent introduces an intermediary short-circuit protection module that acts as a mediator between the light-emitting module and the driver circuit. This protection module includes protection elements configured to be turned on in response to a short-circuit fault, effectively isolating the fault from the driver circuit. The intermediary structure provides simple series connection without requiring complex control mechanisms, achieving reliable protection while maintaining circuit simplicity.
3Reliability
If the short-circuit protection module is configured to turn on automatically, then short-circuit damage is prevented, but the detection and measurement difficulty increases
Solution Approach 1:
The patent implements self-service by designing the short-circuit protection module to automatically detect and respond to short-circuit faults without requiring external control or complex measurement systems. The protection elements are configured to turn on in response to the short-circuit condition itself, using the fault condition to trigger the protection mechanism. This self-activating approach simplifies the detection process by eliminating the need for separate detection circuits or control logic.
Data Source
AI summary
Provided are a driver circuit, a light-emitting panel and a preparation method thereof, and a display device. The driver circuit includes a terminal connection module, a drive module, and a short-circuit protection module. The terminal connection module, the drive module, and the short-circuit protection module are connected in series between a first power supply terminal and a second power supply terminal, and the short-circuit protection module is connected in series between the terminal connection module and the second power supply terminal. The terminal connection module is connected to an original light-emitting unit so that the original light-emitting unit is connected in series between the first power supply terminal and the second power supply terminal. The short-circuit protection module is configured to be disconnected in a case where the original light-emitting unit is short-circuited.