Backlight Control Chip With Boosting And Gating For Flicker-Free Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing near-eye display technologies face challenges in balancing display effect and power consumption when switching between static and dynamic images, leading to flickering issues due to re-powering the backlight control chip during frequency adjustments.
Innovation Solution
A backlight control chip with a boosting circuit and gating circuit that synchronizes variable-frequency displays by boosting and gating signals, eliminating the need for re-powering and preventing flickering, while maintaining compatibility with fixed-frequency operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the backlight control chip is re-powered during frequency adjustments to switch between static and dynamic images, then the display can adapt to different content types, but flickering issues occur and user experience deteriorates
Solution Approach 1:
The patent implements dynamic frequency adjustment capability where the backlight control chip can operate at different frequencies (e.g., 60Hz for static images, 120Hz for dynamic content) without requiring re-powering. The system dynamically switches between frequency modes while maintaining stable operation, eliminating flickering during content type transitions.
Solution Approach 2:
The system changes the operating frequency parameter of the backlight control chip to adapt to different display content types. By adjusting the clock frequency parameter dynamically rather than re-powering the device, the system achieves content adaptation while maintaining display stability and preventing flickering.
2Manufacturing precision
If the backlight control chip operates at higher frequency to improve display quality for dynamic content, then display quality improves, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the backlight frequency based on content type: using higher frequency (120Hz) for dynamic content to maintain display quality, and lower frequency (60Hz) for static images to reduce power consumption. This dynamic frequency scaling resolves the contradiction between display quality and energy efficiency.
Solution Approach 2:
The operating frequency parameter is changed based on content requirements. The system switches between high frequency mode for quality-critical dynamic content and low frequency mode for power-saving static content, optimizing the balance between display quality and power consumption through parameter adjustment.
3Device complexity
If the backlight control chip uses fixed frequency operation to simplify the system, then device complexity is reduced, but the system cannot adapt to variable refresh rate displays
Solution Approach 1:
The backlight control chip incorporates dynamic frequency adjustment capability that allows it to adapt to variable refresh rate displays. The system can switch between different frequencies (60Hz, 120Hz) based on display requirements, providing adaptability while maintaining relatively simple hardware architecture through software-based frequency control.
Solution Approach 2:
The backlight control chip is designed with multi-functionality to support both fixed-frequency operation and variable refresh rate displays. By integrating frequency switching capability, the same hardware can serve multiple purposes: adapting to different display types and content requirements without requiring separate dedicated circuits for each mode.
Data Source
AI summary
Disclosed are a backlight control chip, a driving method, a backlight control system, and a near-eye display device. The backlight control chip is used for driving a backlight module, and includes: a boosting circuit and a gating circuit; where an input terminal of the boosting circuit is electrically connected to a first signal terminal, and an output terminal of the boosting circuit is electrically connected to a first input terminal of the gating circuit; a first control terminal of the gating circuit is electrically connected to a second signal terminal, a second control terminal of the gating circuit is electrically connected to a third signal terminal, and an output terminal of the gating circuit is electrically connected to the backlight module.