Sweep Voltage Generator for Micro LED Gray Scale Control
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Solution Overview
Problem
Conventional methods for generating sweep signals in micro light-emitting diode displays have complex driving structures and higher costs, making it difficult to accurately control pixel gray scale due to output load variations.
Innovation Solution
A sweep voltage generator with a current generating block and voltage regulating block that detects and compensates for output load variations, adjusting the sweep signal to achieve accurate gray scale control in micro LED displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional digital-to-analog converter method is used to generate sweep signals, then the display panel can be driven, but the driving structure becomes complicated and cost increases
Solution Approach 1:
The patent extracts the essential function of sweep signal generation from the complex digital-to-analog converter and implements it through a simplified current generating block that directly generates sweep currents based on digital control signals. This removes unnecessary conversion stages while maintaining the core functionality, thereby reducing structural complexity without compromising gray scale control accuracy.
Solution Approach 2:
The patent replaces the conventional digital-to-analog conversion mechanism with a direct digital control approach where digital control signals are used to modulate current generation. This substitution eliminates the need for complex analog conversion circuits while achieving the same sweep signal generation purpose, thus simplifying the driving structure.
2Reliability
If conventional sweep signal generation method is used, then the display panel can operate, but output load variation causes inaccurate gray scale control
Solution Approach 1:
The patent introduces a feedback mechanism where the actual output load is detected and used to adjust the sweep signal generation in real-time. The current generating block receives feedback about the output load condition and dynamically compensates for variations, ensuring accurate gray scale control despite changes in display panel loading conditions.
Solution Approach 2:
The patent implements dynamic adjustment capability in the sweep signal generation system. The current generating block can dynamically modify its output characteristics based on real-time detection of output load variations. This dynamic adaptation allows the system to maintain accurate gray scale control across different operating conditions and load scenarios.
Data Source
AI summary
A sweep voltage generator and a display panel are provided. The sweep voltage generator includes an output node, a current generating block and a voltage regulating block. The output node is used to provide a sweep signal. The current generating block is coupled to the output node, includes a detection path for detecting an output load variation on the output node, and adjusts the sweep signal provided by the output node based on the output load variation. The voltage regulating block is coupled to the output node for regulating a voltage of the output node.