Display Driver Chip Power Path for GOA Efficiency Loss
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Solution Overview
Problem
The high power consumption of the power supply in gate driving circuits of display devices using Gate On Array (GOA) technology is a challenge that current technologies struggle to address effectively.
Innovation Solution
A driver chip configuration that includes a first voltage boost circuit and a first voltage regulation circuit, allowing direct transmission of high-voltage power supply to the regulation circuit, bypassing the boost circuit, and utilizing direct paths with resistors or signal lines to reduce power consumption in low-voltage display devices, and incorporating voltage conversion and boost circuits for high-voltage devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the voltage boost circuit is used to generate positive power supply voltage for the gate driving circuit, then the power supply voltage can be generated, but power supply efficiency loss is high
Solution Approach 1:
The patent extracts the voltage boost circuit from the power supply path by providing a direct connection between the high-voltage power supply input end and the voltage regulation circuit. This allows the high-voltage power supply to directly provide voltage to the gate driving circuit without passing through the boost circuit, thereby eliminating the efficiency loss associated with voltage conversion.
Solution Approach 2:
The power supply system is segmented into two independent paths: one path uses the voltage boost circuit for devices requiring voltage conversion, while the other path provides a direct connection for devices that can use the high-voltage power supply directly. This segmentation allows each path to be optimized for its specific function, reducing overall power loss.
2Ease of manufacture
If the gate driving circuit is integrated on array substrate using GOA technology, then material costs and manufacturing processes can be reduced, but power consumption of power supply becomes high
Solution Approach 1:
The patent introduces a direct connection path as an intermediary between the high-voltage power supply and the gate driving circuit. This intermediary bypasses the inefficient voltage boost circuit, allowing the gate driving circuit to receive power directly from the high-voltage source, thereby reducing power consumption while maintaining the integrated GOA architecture.
3Adaptability or versatility
If the driver chip is configured for low-voltage display device, then compatibility with new low-voltage device is achieved, but requires reducing power consumption
Solution Approach 1:
The driver chip is designed with dynamic configurability, allowing it to adapt its power supply path based on the specific device requirements. The chip can selectively use either the direct high-voltage path or the voltage boost path, enabling it to optimize power consumption for low-voltage devices while maintaining compatibility with high-voltage devices through the same hardware architecture.
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
Reduces power supply efficiency loss and overall power consumption in display devices by 15% to 35%, while maintaining compatibility with conventional technologies and ensuring easy implementation.
Implementation Method 1
the voltage boost circuit is configured to boost the received voltage to generate a positive power supply voltage
Implementation Method 2
the voltage regulation circuit is configured to regulate the voltage and then generate the required power supply voltage
Data Source
AI summary
One example driver chip is configured to be used in a low-voltage or high-voltage display device. The low-voltage display device includes a first circuit board, a first gate driving circuit, and a first direct path. The first circuit board includes a first high-voltage power supply input end, a first medium-voltage power supply input end, and a first low-voltage power supply input end. A first positive power supply voltage of the first gate driving circuit is less than a first high-voltage power supply voltage of the first high-voltage power supply input end. In a configuration solution of the driver chip, the first voltage boost circuit is turned off. The first voltage regulation circuit directly receives the first high-voltage power supply voltage of the first high-voltage power supply input end through the first direct path, regulates the first high-voltage power supply voltage, and generates and outputs the first positive power supply voltage.