MUX Driver for Display Data Line Power Reduction
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Solution Overview
Problem
As display devices with increasing size and resolution require more output channels for their data driving circuits, manufacturing costs rise, and there is a need to reduce unnecessary power consumption, especially at low resolutions.
Innovation Solution
Incorporating a MUX driver between the display panel and the data driver, which controls data outputs based on image signal resolution, using multiple output channels only when necessary and copying data with the same polarity to reduce power consumption during low-resolution operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of output channels of the data driving circuit is increased to match the number of data lines in high-resolution display panels, then the display resolution capability is improved, but the manufacturing cost increases
Solution Approach 1:
The data driving circuit is designed with multi-functionality to support both high-resolution and low-resolution display modes. The same circuit can dynamically adjust its output channel configuration based on the required resolution, eliminating the need for separate circuits for different resolutions and reducing manufacturing costs while maintaining high-resolution capability when needed
2Measurement precision
If all output channels of the data driving circuit are activated to support high-resolution displays, then the display quality is improved, but the power consumption increases
Solution Approach 1:
The data driving circuit implements dynamic operation by adjusting the number of active output channels based on the current display resolution requirement. When operating in low-resolution mode, only the necessary number of output channels are activated, reducing power consumption. When high-resolution mode is required, all output channels are activated to maintain display quality. This dynamic adaptation allows the system to optimize power usage according to actual operational needs
3Ease of manufacture
If the number of output channels is reduced to lower manufacturing cost, then the manufacturing cost is reduced, but the ability to support high-resolution displays is worsened
Solution Approach 1:
The data driving circuit is designed with dynamic reconfigurability, allowing it to adapt its output channel configuration based on the required display resolution. The circuit can operate with fewer active channels during low-resolution modes to reduce manufacturing complexity and cost, while being capable of activating additional channels when high-resolution display is required, thus maintaining full display resolution capability without permanently increasing manufacturing complexity
Data Source
AI summary
Display device may comprise a display panel which includes a plurality of pixels including a plurality of sub pixels implementing different colors and a plurality of data lines connected to the sub pixels, a data driver including a first output channel and a second output channel for supplying a data signal to a corresponding one of the plurality of data lines; and a MUX driver disposed between the display panel and the data driver, and controls data outputs of the plurality of data lines connected to the first output channel and the second output channel in accordance with a resolution of an image signal input from the outside.