Micro LED GIA Gate Driving Circuit for Horizontal Defect Prevention
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Solution Overview
Problem
Existing micro LED display apparatuses face challenges in achieving stable driving of gate drivers within a Gate In Active (GIA) circuit without horizontal defects.
Innovation Solution
A micro LED display apparatus with a GIA circuit that includes a first transistor along clock wires, a second transistor connected to a forward start signal, a third transistor connected to a reverse start signal, and gate drivers providing scan signals with specific pulse widths, arranged in multiple regions along the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a gate driving circuit is embedded in a display panel (GIA circuit), then the display apparatus becomes thinner and integration is improved, but horizontal defects appear and stable driving becomes difficult
Solution Approach 1:
The gate driving circuit is divided into multiple independent gate drivers (first gate driver, second gate driver, etc.) that can be independently controlled. Each gate driver has separate clock wires and control transistors, allowing individual stabilization without affecting the entire circuit. This segmentation enables reliable operation of each unit while maintaining the thin-profile GIA architecture.
Solution Approach 2:
Clock wires are introduced as intermediary signal transmission channels between the control circuit and gate drivers. These dedicated clock wires, combined with clock control transistors (first transistor, second transistor), act as mediators to provide stable timing signals to each gate driver, preventing horizontal defects while maintaining the embedded structure.
2Adaptability or versatility
If multiple gate drivers are integrated in a GIA circuit, then functionality is improved, but horizontal defects occur and driving stability deteriorates
Solution Approach 1:
The multi-functional gate driving circuit is segmented into independent gate driver units, each with its own clock control mechanism. This allows each functional unit to operate reliably independently, preventing the propagation of horizontal defects across the entire circuit while maintaining versatile functionality.
Solution Approach 2:
Each gate driver is provided with locally optimized clock control transistors and dedicated clock wires. This local quality enhancement ensures that each functional unit has the necessary resources for stable operation, improving overall reliability without sacrificing the integrated multi-functional design.
3Productivity
If clock wires are connected to multiple gate drivers, then signal distribution is improved, but signal stability decreases and horizontal defects appear
Solution Approach 1:
Clock control transistors (first transistor, second transistor, etc.) are introduced as intermediary elements between the clock wires and gate drivers. These transistors act as buffered mediators that maintain signal integrity while distributing clock signals to multiple gate drivers, preventing signal degradation and horizontal defects.
Solution Approach 2:
The electrical parameters of clock signal transmission are optimized by introducing clock control transistors that can adjust signal levels and timing. This parameter control ensures stable clock signal distribution across multiple gate drivers while maintaining signal integrity and preventing horizontal defects.
Data Source
AI summary
The present disclosure relates to a micro LED display apparatus, and to a display apparatus capable of stably driving a gate driver in a gate in active (GIA) circuit. According to the present disclosure, a gate driver in the GIA circuit of a display apparatus can be stably driven without the appearance of horizontal line defects.