Multiplexed Grid-Driving Circuits for High-PPI Displays
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Solution Overview
Problem
The increasing pixel density in display panels requires more grid driving circuits, which reduces the available space for their fabrication due to the increased row quantity of pixel units.
Innovation Solution
A grid-driving-circuit array is designed for high-PPI display panels, incorporating multiple groups of grid driving units and multiplexers that supply frame-starting-up signals to grid driving circuits, reducing the number of signal lines and increasing fabrication space by delimiting the display panel into active areas and using multiplexers to control grid driving circuits efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pixel density (PPI) is increased to improve display resolution, then the display quality is improved, but the available space for fabricating grid driving circuits decreases
Solution Approach 1:
Multiple frame starting-up signal outputting units are merged into a single multiplexer device. The multiplexer integrates multiple signal sources and uses selection signals to route the appropriate frame starting-up signal to the grid driving circuits, thereby reducing the total number of separate signal lines and freeing up space on the display panel.
Solution Approach 2:
The multiplexer serves multiple functions: it acts as a signal router, a space-saving integration device, and a control mechanism for selecting which frame starting-up signal should be active. This multi-functionality allows a single device to replace what would otherwise require multiple separate signal transmission paths.
2Reliability
If the quantity of pixel units is increased to improve 3D display effect, then the 3D display quality is improved, but the row quantity of grid driving circuits increases which reduces space for each row
Solution Approach 1:
The multiplexer combines multiple frame starting-up signal paths into a single integrated device. By merging these signal transmission functions, the physical space required for each signal line is reduced, allowing more rows of grid driving circuits to be accommodated on the display panel without compromising the 3D display effect.
3Reliability
If multiple frame starting-up signal lines are provided for each grid driving circuit to improve signal stability, then the signal reliability is improved, but the number of signal lines increases which consumes more space
Solution Approach 1:
Multiple frame starting-up signal lines are merged into a single multiplexer device. The multiplexer receives multiple frame starting-up signals and selectively routes one to the grid driving circuits based on control signals. This merging reduces the number of separate signal lines required while maintaining signal stability through the selective routing capability.
Solution Approach 2:
The multiplexer acts as an intermediary device between multiple frame starting-up signal sources and the grid driving circuits. It mediates the signal transmission by selecting and routing the appropriate signal, thereby reducing the need for multiple direct signal lines while ensuring stable signal delivery.
Data Source
AI summary
A grid-driving-circuit array is applied to a display panel, the display panel is delimited into a plurality of active areas, and each of the active areas includes multiple rows of pixel units and multiple rows of grid lines. The multiple groups of grid driving units supply grid driving signals to the plurality of active areas, and each of the groups of grid driving units includes one or more grid driving circuits. The one or more grid driving circuits are configured for supplying the grid driving signals to the grid lines within the active area corresponding to the one or more grid driving circuits. One or more multiplexers, wherein each of the multiplexers includes a plurality of frame-starting-up-signal outputting units, each of the frame-starting-up-signal outputting units of the multiplexer is configured for supplying a frame starting-up signal to one of the grid driving circuits.