Circuit Board Switch Unit for Mismatch Protection
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Solution Overview
Problem
The existing connectors in TFT-LCD systems often lead to incorrect assembly and potential damage due to mismatched system and circuit boards, resulting in poor performance or damage to the circuit board.
Innovation Solution
A circuit board design that includes a switch unit configured with a switch-on signal, which connects with the system and control boards through an integrated circuit bus, allowing the circuit board to receive drive data only when the control signal matches the switch-on signal, thereby preventing incorrect operation and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If shared connectors are used for system board and circuit board connection, then manufacturing cost is reduced and assembly is simplified, but mismatched connections may occur leading to incorrect operation or damage
Solution Approach 1:
The patent applies preliminary action by pre-configuring a unique switch-on signal in the circuit board before assembly. This signal serves as an identification code that must match the control signal from the corresponding system board. The switch unit remains in a default off state and only activates when the correct matching signal is received, preventing mismatched connections from causing damage or incorrect operation while allowing shared connectors to be used for cost reduction
2Reliability
If switch unit with encryption is added to circuit board, then connection reliability and protection against mismatch are improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by implementing the switch unit and encryption mechanism only at the specific interface location where connection reliability is critical, rather than throughout the entire circuit board. The switch unit is positioned between the connector and the internal circuitry, providing targeted protection only where needed. This localized approach enhances connection reliability while minimizing the increase in overall device complexity
Data Source
AI summary
The embodiments of the disclosure disclose a circuit board and a display, the circuit board includes a switch unit, the switch unit is preset with a switch-on signal, the switch unit is configured to respectively connect with the system board and the control board; when the control signal received from the system board is the same with the conduction signal, the switch unit is switched on, allowing the circuit board to receive the drive data and work normally; when the control signal received from the system board is not the same with the conduction signal, the switch unit is switched off, stopping the circuit board from receiving the drive data and resulting in stoppage of an operation.