Master-Slave Driving Circuit for Multi-Panel Display Power Sharing
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Solution Overview
Problem
Multi-panel display devices require multiple power circuits, increasing cost and size, necessitating a solution to reduce the number of power circuits while maintaining efficient power management across display panels.
Innovation Solution
A driving circuit and synchronization method that allows a single power circuit to be shared between display panels, with a master driving chip transmitting power enable and control signals to a power circuit, which provides power to both driving chips, enabling the slave driving chip to synchronize with the master based on timing control signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each display panel is equipped with an independent power circuit, then power management reliability is improved, but device cost and size increase
Solution Approach 1:
The patent merges the power circuitry into a single shared power circuit that serves multiple display panels through a master-slave architecture. The master driving chip controls the power circuit while slave driving chips synchronize their power operations based on timing control signals from the master, thereby reducing the number of power circuits while maintaining reliable power management across all panels
Solution Approach 2:
The master driving chip acts as an intermediary between the single power circuit and multiple slave driving chips. It receives power control signals from the power circuit and distributes timing control signals to slave chips, enabling coordinated power management without requiring each panel to have its own dedicated power circuit
2Adaptability or versatility
If multiple power circuits are disposed in multi-panel display device, then each display panel can be powered independently, but the cost and size of the device increase
Solution Approach 1:
The patent implements dynamic power management where the power circuit can be selectively activated for different display panels based on operational requirements. The master-slave architecture allows flexible power distribution control, enabling the system to adapt power allocation dynamically rather than requiring permanent independent power circuits for each panel
Solution Approach 2:
The single power circuit is designed with universal functionality to serve multiple display panels through the master-slave control architecture. The power circuit responds to control signals from the master driving chip and can provide power to different panels as needed, making it a multi-functional component that replaces multiple dedicated power circuits
Data Source
AI summary
A driving circuit and a synchronization method thereof for a multi-panel display device are provided. The driving circuit includes a first driving chip and a second driving chip which share a power circuit. One of the first driving chip and the second driving chip is set as a master driving chip or a slave driving chip based on a control signal. The master driving chip transmits a power enable signal and a control signal to the power circuit, which triggers the power circuit providing power voltages to the master driving chip and the slave driving chip. When the master driving chip transmits a timing control signal to the slave driving chip, the slave driving chip performs a power synchronization operation to synchronize with the master driving chip based on the timing control signal.