Source Driver Mode Control for Odd Number Drivers
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Solution Overview
Problem
Existing liquid crystal display driving apparatuses based on two-port architecture are not suitable for accommodating an odd number of source drivers, limiting their ability to achieve both excellent operational performance and high application flexibility, especially with increasing data driving lines required for high-resolution displays.
Innovation Solution
A driving apparatus with a timing controller and source drivers that include multiple input ports and operation mode control ends, allowing the source drivers to operate in different modes by receiving operation mode control signals, enabling flexible configuration regardless of the number of source drivers, and improving signal integrity by reducing connection lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-port architecture is used to reduce connection lines and improve signal integrity, then the number of via holes is reduced and signal integrity is improved, but the driving apparatus cannot accommodate odd number of source drivers
Solution Approach 1:
The source driver is designed with multiple input ports (first input port and second input port) and operation mode control ends that can be dynamically configured through operation mode control signals. This allows the source driver to flexibly connect to different output ports (first output port or second output port) of the timing controller, enabling the system to accommodate both even and odd numbers of source drivers while maintaining the benefits of two-port architecture for signal integrity
Solution Approach 2:
The source driver is designed with multi-functional capabilities, having both first and second input ports that can receive signals from either the first or second output ports of the timing controller. This universal design allows a single source driver configuration to work with different numbers of source drivers (odd or even) in the system, eliminating the limitation of traditional two-port architecture
2Adaptability or versatility
If single-port architecture is used to accommodate odd number of source drivers, then application flexibility is improved, but the number of connection lines increases and signal integrity deteriorates
Solution Approach 1:
The source driver incorporates dynamic configuration capabilities through operation mode control ends that receive operation mode control signals. This allows the driver to dynamically select which input port (first or second) to use based on the system configuration, enabling odd number of source drivers while maintaining two-port architecture benefits for signal integrity
Solution Approach 2:
The system changes the connection configuration parameter by using operation mode control signals to switch between different input ports of the source driver. This parameter change enables flexible accommodation of odd number of source drivers without requiring single-port architecture, thereby maintaining signal integrity
3Measurement precision
If more data driving lines are added for high-resolution displays, then display resolution is improved, but the complexity of the driving apparatus increases
Solution Approach 1:
The source driver is designed with multi-functional input ports that can be configured through operation mode control signals. This universal design allows the same hardware structure to support different numbers of data driving lines and different display resolutions, reducing the need for hardware changes when upgrading to higher resolution displays
Data Source
AI summary
A driving apparatus for driving a display panel includes a timing controller and a plurality of source drivers. The timing controller has a first output port and a second output port. The first output port is employed to output a first clock signal and plural first data signals. The second output port is employed to output a second clock signal and plural second data signals. Each source driver includes at least two operation mode control ends for receiving an operation mode control signal having at least two bits for setting at least first to third operation modes. If the operation mode control signal sets the source driver to operate in the first operation mode, the source driver is electrically connected to both the first and second output ports, for driving the display panel according to the first data signals, the second data signals, the first clock and the second clock.