Hybrid Pixel Structure With Integrated Driving to Cut Display Thickness
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Solution Overview
Problem
The existing display architectures for LED-based display products require high process costs and large module thickness due to the complex glass edge lead process and the need for multiple Printed Circuit Boards (PCBs) to accommodate driving ICs, which increases the complexity and thickness of the display module.
Innovation Solution
A hybrid pixel structure is introduced, comprising three sub-pixel units of different colors and a driving unit, where the sub-pixel units are arranged in various configurations relative to the driving unit, allowing for flexible sub-pixel arrangement and reduced wiring complexity, thereby lowering process requirements and module thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple PCBs are used to place driving ICs, then driving functionality is achieved, but module thickness increases
Solution Approach 1:
The patent merges the driving circuit functionality with the display pixel structure by integrating all necessary driving components directly on the glass substrate. This consolidation eliminates separate ICs and complex interconnections, reducing overall device complexity while maintaining the multiplexer-based row-column scanning architecture.
Solution Approach 2:
The patent transitions from a three-dimensional stacked architecture (multiple PCBs stacked to accommodate driving ICs) to a two-dimensional planar integration on the glass substrate. By laying out all driving components in the same plane as the pixel electrodes, the need for vertical stacking is eliminated, thereby reducing module thickness.
2Ease of operation
If all LED electrodes are led out to PCB, then driving control is achieved, but process cost and glass edge lead requirements increase
Solution Approach 1:
The patent extracts the driving function from external ICs and PCBs and relocates it directly to the glass substrate. The pixel circuit components (transistors, capacitors, resistors) are integrated onto the glass substrate, eliminating the need for complex glass edge lead processes and external IC connections while maintaining the multiplexed row-column driving architecture.
Data Source
AI summary
Provided is a pixel structure, a display panel, and a display device. The pixel structure includes three sub-pixel units of different colors and a driving unit. The three sub-pixel units include a first sub-pixel unit, a second sub-pixel unit, and a third sub-pixel unit. The driving unit is configured to send corresponding display data to the three sub-pixel units respectively. The sub-pixel units are arranged on one side or two sides of the driving unit.