Parallel Data Distribution for Display Wiring Fault Tolerance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices are vulnerable to wiring interconnection faults, leading to malfunctions when single row or column connections fail, and they suffer from non-uniformity and reduced resolution due to the complexity of matrix-addressing schemes.
Innovation Solution
A display device with a substrate featuring a two-dimensional array of pixels and selection circuits connected by a parallel signal conductor, allowing for efficient pixel information transmission and reducing the impact of wiring faults, as each selection circuit selects and provides pixel information directly to its associated driving circuit without requiring matrix control signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If matrix-addressing schemes are used to control pixels, then pixel control capability is achieved, but wiring complexity increases and resolution is reduced
Solution Approach 1:
The display device is divided into multiple independently controllable blocks or regions. Each block has its own selection circuit that can be independently addressed, breaking the monolithic matrix structure into manageable segments. This segmentation reduces the overall wiring complexity while maintaining high resolution within each block, as each block can be controlled with fewer wires than a full matrix of the same size.
Solution Approach 2:
The patent introduces a third dimension of control by adding block selection signals that operate perpendicular to the traditional row-column matrix addressing. Instead of requiring N×M wires for an N×M pixel matrix, the system uses block selection signals combined with reduced row-column addressing within each block, effectively adding a dimensional layer to the addressing scheme that reduces wiring requirements while preserving resolution.
2Reliability
If matrix-addressing schemes are used to control pixels, then pixel control capability is achieved, but vulnerability to wiring faults increases
Solution Approach 1:
By segmenting the display into independent blocks with separate selection circuits, a wiring fault in one block does not propagate to other blocks. Each block's independent addressing allows localized fault containment, significantly improving reliability without requiring excessive redundancy across the entire display matrix.
Solution Approach 2:
The block selection circuits act as intermediaries between the control system and the pixel arrays within each block. These intermediaries provide isolation and protection, allowing the system to tolerate wiring faults by rerouting or bypassing affected pathways while maintaining control through the intermediary block selection layer.
3Ease of manufacture
If shared driver circuitry is used, then manufacturing cost is reduced, but control precision may be compromised
Solution Approach 1:
Driver circuitry is segmented and shared among multiple blocks rather than being dedicated to each individual pixel or large matrix. Each block shares a portion of the driver circuitry through the block selection mechanism, reducing the total number of drivers needed while maintaining sufficient control precision within each block through the selective addressing capability.
Solution Approach 2:
The block selection circuits and shared driver circuitry are designed to be multi-functional, serving multiple blocks simultaneously. A single driver can control multiple blocks by switching between them through the block selection mechanism, reducing the total component count and manufacturing cost while maintaining the ability to precisely control each block when needed.
Data Source
AI summary
A display device responsive to a controller, including a substrate having a display area; a two-dimensional array of pixels formed on the substrate in the display area, each pixel comprising an optical element and a driving circuit for controlling the optical element in response to selected pixel information; a two-dimensional array of selection circuits located in the display area, each associated with one or more pixels, for selecting pixel information provided by the controller, wherein each selection circuit receives the provided pixel information, selects pixel information corresponding to its associated pixel(s) in response to the provided pixel information, and provides the selected pixel information to the corresponding driving circuit(s); and a parallel signal conductor electrically connecting the selection circuits in common for transmitting pixel information provided by the controller to each of the selection circuits.