Array Substrate Signal Lines with Segmented Sub-lines for 3D Displays
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Solution Overview
Problem
Liquid crystal displays (LCDs) face issues with dark regions and moire phenomena due to opaque signal lines, which affect viewing angles and grayscale continuity in 3D displays, and the introduction of black matrices to mitigate these issues further disrupt light emission.
Innovation Solution
The array substrate features signal lines composed of multiple sub-lines arranged at intervals, with transparent conductive layers and wire-grid structures that ensure good signal transmission and light transmittance, reducing the area of dark regions and eliminating the need for black matrices between sub-pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If opaque signal lines are used to drive sub-pixels, then signal transmission is ensured, but dark regions and moire phenomena occur affecting display quality
Solution Approach 1:
The signal line is divided into multiple sub-lines (first sub-line, second sub-line, third sub-line, fourth sub-line) arranged in parallel. Each sub-line carries a portion of the signal, distributing the electrical load while reducing the opacity and visual impact of individual conductive elements, thereby mitigating dark regions and moire phenomena
Solution Approach 2:
The signal transmission function is extended from a single linear path to a two-dimensional parallel arrangement of multiple sub-lines. This dimensional expansion allows signal distribution across multiple pathways, improving both signal reliability and visual uniformity by reducing the concentration of opaque material in any single location
2Object-affected harmful factors
If black matrices are introduced to mitigate dark regions, then moire phenomena are reduced, but light emission is disrupted and display quality deteriorates
Solution Approach 1:
The black matrix component is completely removed from the display structure. Instead of using black matrices to mitigate moire phenomena, the patent employs multiple parallel sub-lines with transparent or semi-transparent conductive materials that inherently reduce moire effects while maintaining light emission continuity across the pixel array
3Ease of operation
If signal lines are arranged between adjacent sub-pixels, then direct sub-pixel driving is achieved, but defective dark regions are formed that are visible during 3D display
Solution Approach 1:
The single signal line positioned between sub-pixels is segmented into multiple parallel sub-lines. This segmentation distributes the signal transmission function across several thinner conductive paths, maintaining electrical connectivity for direct sub-pixel driving while reducing the visual prominence and defectiveness of dark regions during 3D display operations
Solution Approach 2:
The patent employs composite conductive structures where multiple sub-lines may use different transparent or semi-transparent conductive materials with varying transparency characteristics. This composite approach optimizes both electrical signal transmission and optical performance, ensuring direct sub-pixel driving capability while minimizing defective dark region visibility
Data Source
AI summary
The present application provides an array substrate and a display device. The array substrate includes: a first substrate and a plurality of signal lines on the first substrate. The plurality of signal lines are arranged along a first direction; at least one of the plurality of signal lines include a plurality of signal sub-lines arranged at intervals along the first direction, the plurality of signal sub-lines are electrically connected, each of the plurality of signal sub-lines extends along a second direction, and the second direction intersects the first direction.