Display Driver IC Voltage Generation for Low Power Mode
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Solution Overview
Problem
Existing display driver integrated circuits consume excessive power when generating voltages to drive display devices, particularly in low-power modes, due to unnecessary boosting and voltage regulation inefficiencies.
Innovation Solution
The proposed solution involves a display driver integrated circuit with multiple boosters and regulators that selectively generate and utilize different boosting voltages based on operational modes, optimizing voltage levels to reduce power consumption by preventing excessive boosting and voltage drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a single booster is used to generate boosting voltage, then the device complexity is reduced, but power consumption increases due to unnecessary boosting in low-power modes
Solution Approach 1:
The voltage generation system is divided into multiple independent boosters (first booster and second booster), each capable of operating independently. The first booster generates a first boosting voltage while the second booster generates a second boosting voltage, allowing selective operation based on power mode requirements. This segmentation enables the system to activate only the necessary booster in each mode, reducing unnecessary power consumption while maintaining manageable device complexity through modular architecture.
Solution Approach 2:
The system dynamically switches between different operating modes (first mode and second mode) based on power requirements. In the first mode, only the first booster operates to generate the first output voltage. In the second mode, both boosters operate to generate first and second output voltages. This dynamic adaptability allows the system to optimize power consumption by activating the minimum necessary components for each operational state.
2Reliability
If voltage boosting is always performed, then sufficient voltage is available for all display modes, but power is unnecessarily consumed in low-power modes
Solution Approach 1:
The system implements dynamic voltage generation by switching between different operational modes. In the first mode, only the first booster is activated to generate the first output voltage, sufficient for low-power display operation. In the second mode, both boosters are activated to generate both first and second output voltages, providing sufficient voltage for high-power display modes. This dynamic approach ensures voltage sufficiency for all modes while avoiding unnecessary power consumption by activating only the required boosters.
Solution Approach 2:
The system changes operational parameters (which boosters are active, which voltages are generated) based on the required power mode. By adjusting the configuration of active components and generated voltages according to operational requirements, the system ensures that sufficient voltage is available when needed while minimizing power consumption during low-power operations.
3Use of energy by moving object
If multiple boosters and regulators are used to optimize voltage generation, then power consumption is reduced, but the device complexity increases
Solution Approach 1:
The voltage generation system is segmented into multiple independent functional blocks (first booster, second booster, first regulator, second regulator) that can operate independently. Each component has a specific function and can be activated or deactivated based on operational requirements. This modular segmentation reduces power consumption by allowing selective operation while managing complexity through clear functional separation and standardized interfaces between components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces power consumption by generating appropriate output voltages efficiently, minimizing power loss and extending battery life in electronic devices, especially in low-power modes.
Implementation Method 1
a first booster that generates a first boosting voltage by boosting at least one of first and second power supply voltages
Implementation Method 2
a second booster that generates the first boosting voltage or a second boosting voltage by boosting at least one of the first and second power supply voltages
Implementation Method 3
a first regulator that generates a first output voltage based on at least one of the first boosting voltages generated by the first and second boosters
Implementation Method 4
a second regulator that generates a second output voltage based on the second boosting voltage
Data Source
AI summary
Disclosed is a display driver integrated circuit which includes a first booster that generates a first boosting voltage by boosting at least one of first and second power supply voltages, a second booster that generates the first boosting voltage or a second boosting voltage by boosting at least one of the first and second power supply voltages, a first regulator that generates a first output voltage based on at least one of the first boosting voltages generated by the first and second boosters, and a second regulator that generates a second output voltage based on the second boosting voltage.