Single-Sided Driver Arrangement for Display Devices
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Solution Overview
Problem
Existing liquid crystal display devices face challenges in achieving a large display area on a small device while maintaining high image quality due to sharp positional fluctuations in wiring resistance, which affect the quality of images displayed.
Innovation Solution
The configuration includes source drivers and a gate driver arranged on a second substrate area overlapping with a first substrate, with gate lines and source lines extending in different directions, and lead-out lines connecting to gate lines to minimize resistance fluctuations, allowing for proper signal transmission and a larger display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If gate drivers and source drivers are disposed adjacent to four sides of a rectangular shape of the overlapping area, then the device can be manufactured with conventional wiring structures, but the ratio of display area to whole area becomes small and wiring resistance fluctuates sharply
Solution Approach 1:
The patent transitions from a conventional four-sided driver arrangement to a configuration where drivers are concentrated on one side (the fourth side), utilizing the vertical dimension more effectively. This dimensional reorganization allows the display area to extend more uniformly across the substrate, increasing the display area ratio while maintaining manufacturability through standardized driver integration processes.
Solution Approach 2:
The patent employs an asymmetric driver arrangement where all drivers (gate and source) are positioned on one side rather than symmetrically distributed around the perimeter. This asymmetric configuration optimizes the display area by eliminating dead space on opposite sides, while the wiring structure is designed with compensatory routing to maintain signal integrity and reduce resistance fluctuations.
2Area of stationary object
If drivers are concentrated on one side to increase display area, then the display area ratio increases, but wiring resistance fluctuates sharply affecting image quality
Solution Approach 1:
The patent applies local quality optimization by designing the wiring structure with varying characteristics in different regions. The wiring layout, conductor widths, and material compositions are locally adjusted along the signal transmission paths to compensate for resistance fluctuations caused by the concentrated driver arrangement. This ensures uniform signal delivery across the display area, maintaining image quality while maximizing display area.
Solution Approach 2:
The patent utilizes parameter changes in the wiring structure, such as varying conductor width, thickness, and material composition along different signal paths. These parameter adjustments are made to compensate for the increased resistance fluctuations that occur when drivers are concentrated on one side, thereby maintaining consistent signal quality across the entire display area.
3Reliability
If wiring structure is optimized to reduce resistance fluctuation, then image quality improves, but the complexity of wiring design increases
Solution Approach 1:
The patent segments the wiring structure into multiple functional zones with standardized design rules for each zone. By dividing the complex wiring layout into manageable segments with repeating patterns and modular components, the design complexity is reduced while still achieving the goal of minimizing resistance fluctuations. This segmented approach allows for systematic optimization without overwhelming complexity.
Data Source
AI summary
A display device includes source drivers, at least one gate driver, a first substrate, a second substrate, gate lines, source lines, lead-out lines and connection parts, wherein the gate signals are emitted from the gate driver to the gate lines via the lead-out lines and the connection parts, the source drivers include a first source driver and a second source driver, the second source driver being spaced apart from the first source driver in a first direction, and the gate driver is located between the first source driver and second source driver in the first direction.