Micro LED Pixel Circuit Control Node Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing Micro LED display panel technologies have complex circuitry structures that hinder efficient control and utilization of pixel circuits, leading to increased power consumption and reduced grayscale levels.
Innovation Solution
A pixel circuit design that includes an input circuit connected to gate lines and control nodes, a control circuit controlling switching nodes, and output circuits connected to data-signal terminals, allowing one control circuit to manage multiple switching nodes and output circuits, enhancing component utilization and reducing structural complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional pixel circuit structures are used for Micro LED display, then each pixel unit can control light emission, but the circuitry structure becomes complex and component utilization is low
Solution Approach 1:
The control circuit is designed to control multiple switching nodes (2N switching nodes for N gate lines) simultaneously, making a single control circuit perform multiple functions that would traditionally require separate control circuits for each gate line. This multi-functional design reduces overall circuit complexity while maintaining full control capability.
Solution Approach 2:
Multiple control functions for different gate lines are merged into a single control circuit that can manage all 2N switching nodes. The control circuit integrates the functionality of what would traditionally be N separate control circuits, thereby simplifying the overall pixel circuit structure.
2Reliability
If more control circuits are used to control each gate line separately, then control precision is maintained, but power consumption increases
Solution Approach 1:
The single control circuit is designed to handle multiple gate lines simultaneously, performing the work of multiple separate control circuits. This consolidation maintains control precision for each gate line while reducing the total number of active circuit components, thereby lowering power consumption.
Solution Approach 2:
The control functions for multiple gate lines are merged into one control circuit, reducing the total power consumption associated with having multiple separate control circuits. The merged circuit maintains the same control precision by properly managing all 2N switching nodes through coordinated operation.
3Quantity of substance
If traditional circuit structures are used, then sufficient control nodes are available, but grayscale levels are reduced and display efficiency decreases
Solution Approach 1:
The control of switching nodes is segmented into N pairs, where each gate line controls 2 switching nodes through the control circuit. This segmentation allows efficient utilization of control nodes while maintaining the ability to produce multiple grayscale levels through coordinated control of the switching nodes and output circuits.
Solution Approach 2:
The control circuit dynamically manages the 2N switching nodes based on input signals from N gate lines, enabling flexible control of 2N output circuits. This dynamic control mechanism allows the system to achieve multiple grayscale levels by varying the control signals, thereby improving display efficiency without requiring additional control nodes.
Data Source
AI summary
The present application discloses a pixel circuit and its driving method. The pixel circuit includes an input circuit, a control circuit, and 2N output circuits with N being a positive integer. The input circuit is configured to control a voltage level of a respective one of N control nodes under control of a gate-driving signal from each gate line and a first control signal. The control circuit is configured to respectively control a voltage level of each of 2N switching nodes under control of the N control nodes. The 2N output circuits are respectively connected to 2N data-signal terminals and the 2N switching nodes. Among the 2N output circuits, an i-th output circuit is configured to input an i-th data signal from an i-th data-signal terminal of the 2N data-signal terminals to an emission circuit under control of an i-th switching node of the 2N switching nodes.