Display Data Line Detour Layout for Narrow Bezel Panels
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Solution Overview
Problem
The width of the non-display area in display devices increases as the number of data lines increases to improve resolution, making it difficult to arrange signal transmission lines with sufficient distances and limiting the number of lines that can be arranged, thereby compromising resolution.
Innovation Solution
A display device design that includes a substrate with a main area and a subsidiary area, featuring a circuit array layer with demux circuits and data lines that utilize detour lines and additional lines to distribute data signals, reducing the width of the non-display area without compromising resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of data lines is increased to improve resolution, then the resolution is improved, but the width of the non-display area increases
Solution Approach 1:
The patent introduces detour lines that extend data lines from the subsidiary area through the display area to reach demux circuits positioned in the non-display area. This three-dimensional routing approach allows data lines to traverse multiple layers and directions, effectively utilizing vertical space and diagonal paths rather than being constrained to a single planar dimension, thereby reducing the horizontal width requirement of the non-display area.
Solution Approach 2:
The patent divides the non-display area into multiple segments including a subsidiary area and a demux area, with demux circuits distributed across these segments. This segmentation allows data lines to be routed to different demux circuits at different positions, reducing the concentration of signal transmission lines in any single location and thereby reducing the overall width requirement of the non-display area.
2Area of stationary object
If the width of the non-display area is reduced to increase the display area ratio, then the display area ratio is improved, but it becomes difficult to arrange signal transmission lines with sufficient distances
Solution Approach 1:
The detour lines utilize vertical dimensionality by extending through multiple layers (from the circuit array layer through the display area to the demux circuits), and diagonal paths within the non-display area. This multi-dimensional routing provides sufficient separation distances between adjacent signal lines while maintaining a compact horizontal footprint, ensuring signal transmission reliability without requiring excessive width.
Solution Approach 2:
The demux circuits act as intermediary elements positioned in the non-display area, receiving data signals from multiple data lines and converting them into fewer output signals. This intermediary positioning allows data lines to be distributed across different spatial locations before reaching the demux circuits, maintaining adequate spacing between lines while reducing the overall non-display area width.
3Area of stationary object
If the number of signal transmission lines is limited due to width constraints, then the width of the non-display area is reduced, but the resolution cannot be improved
Solution Approach 1:
The patent extracts the demux circuits from the main display area and positions them in the non-display area, separating the functions of data line transmission and signal demultiplexing. This extraction allows data lines to be arranged in the display area with optimal spacing for high resolution, while the demux circuits handle signal consolidation in the non-display area, effectively decoupling the resolution requirement from the non-display area width.
Solution Approach 2:
By routing data lines through the display area using detour paths and utilizing the vertical dimension for layer transitions, the patent enables more data lines to be accommodated within the same horizontal footprint. This multi-dimensional routing increases the effective capacity for signal transmission lines without proportionally increasing the non-display area width, thereby preserving resolution improvement potential.
Data Source
AI summary
A display device includes a circuit array layer including a plurality of pixel drivers, data lines, and demux circuits disposed in a demux area of the non-display area, where the demux area is disposed adjacent to the subsidiary area, and a display driver circuit which supplies data driving signals associated with the data lines. A second data input line, which is electrically connected to a second demux circuit disposed in a second demux area of the demux area being a side area of the demux area in a first direction, includes a main input line; a demux detour line disposed in the display area and electrically connected to the main input line; and a detour additional line electrically connected between the demux detour line and an input terminal of the second demux circuit.